CN103202098B - Induction heating cooking instrument - Google Patents

Induction heating cooking instrument Download PDF

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Publication number
CN103202098B
CN103202098B CN201180052424.7A CN201180052424A CN103202098B CN 103202098 B CN103202098 B CN 103202098B CN 201180052424 A CN201180052424 A CN 201180052424A CN 103202098 B CN103202098 B CN 103202098B
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China
Prior art keywords
heater coil
mentioned
secondary heater
induction heating
thermal power
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Expired - Fee Related
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CN201180052424.7A
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Chinese (zh)
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CN103202098A (en
Inventor
亀冈和裕
川田幸男
伊藤匡薰
平敷勇
山内登起子
田中一史
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Mitsubishi Electric Home Appliance Co Ltd
Mitsubishi Electric Corp
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Mitsubishi Electric Home Appliance Co Ltd
Mitsubishi Electric Corp
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Publication of CN103202098A publication Critical patent/CN103202098A/en
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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/06—Control, e.g. of temperature, of power
    • H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/06—Control, e.g. of temperature, of power
    • H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like
    • H05B6/065—Control, e.g. of temperature, of power for cooking plates or the like using coordinated control of multiple induction coils
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/12—Cooking devices
    • H05B6/1209—Cooking devices induction cooking plates or the like and devices to be used in combination with them
    • H05B6/1245—Cooking devices induction cooking plates or the like and devices to be used in combination with them with special coil arrangements
    • H05B6/1254—Cooking devices induction cooking plates or the like and devices to be used in combination with them with special coil arrangements using conductive pieces to direct the induced magnetic field
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/12—Cooking devices
    • H05B6/1209—Cooking devices induction cooking plates or the like and devices to be used in combination with them
    • H05B6/1245—Cooking devices induction cooking plates or the like and devices to be used in combination with them with special coil arrangements
    • H05B6/1272—Cooking devices induction cooking plates or the like and devices to be used in combination with them with special coil arrangements with more than one coil or coil segment per heating zone
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/05—Heating plates with pan detection means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Abstract

Induction heating cooking instrument of the present invention has: circular main heater coil (MC), 1st and the 2nd secondary heater coil (SC1, SC2) of the flat pattern close with its both sides, drive the translation circuit (MIV, SIV1, SIV2) of all heater coils, control the circuit for controlling electricity turning (200) of translation circuit, and operating portion (E), selector switch (350) and selection portion (E1 ~ E2) is provided with at operating portion (E), this selector switch (350) can select the control of repeatedly following drive actions, this drive actions is, when the driving of the secondary heater coil of termination the 1st (SC1), the secondary heater coil of heat driven the 2nd (SC2), then the driving of the 2nd secondary heater coil (SC2) is stopped, drive the 1st secondary heater coil (SC1), this selection portion (E1 ~ E2) controls the sense of current flowed in heater coil, and can select pay attention to the cooking menu of firing rate and pay attention to the cooking menu of the uniformity heated.

Description

Induction heating cooking instrument
Technical field
The present invention relates to the induction heating cooking instrument containing the heating objects such as the metal pan of cooked from the below heating of top board on this top board.
Background technology
Utilize the feature of safe, clean, the excellence that high efficiency is such of the heating device of the heating objects such as heater coil induction heating metal pot by consumer cognition, universally gradually in recent years to expand.
Such induction heating cooking instrument is roughly divided into placed type and in-built (loading) type according to set-up mode, and this placed type induction heating cooking instrument is placed in the upper surface of tank etc. and is used; This in-built (loading) type induction heating cooking instrument is installed in the installation space being arranged in the kitchen utensils such as tank, but no matter any type, the roughly overall of upper surface is all covered by the top board (also referred to as cover plate) formed by heat resistant glass plate etc., and is thereunder configured with one or more induction heating source.As this induction heating source, use in heart shaped and the different multiple heater coil of the diameter configured on roughly same plane and produce power circuit (also referred to as translation circuit) (such as with reference to patent documentation 1) to the high frequency of each heater coil supply high frequency electric power.According to such structure, because the output separately can carrying out the High frequency power of the multiple heater coils to different-diameter controls, so can form various heating type.
As another induction heating cooking instrument, there is following induction heating cooking instrument, namely, circular heater coil is settled in central authorities, and be adjacent to configure multiple sidepiece heater coil with the both sides of this central heater coil, produce power circuit with respective high frequency and drive central heater coil and sidepiece heater coil, in this induction heating cooking instrument, by considering the direction of the high-frequency current flowed in multiple sidepiece heater coil and central heater coil, the induced electromotive force produced between sidepiece heater coil and central heater coil can be offseted, reply is heated (such as with reference to patent documentation 2) such as the purposes of large plane domain simultaneously.
As an induction heating cooking instrument again, also propose there is following induction heating cooking instrument, namely, in order to provide a kind of when heating the large-scale pot with the bed-plate dimension larger than the outside dimension of a heater coil, add heat distribution and do not produce deviation, do not carry out the induction heating cooking instrument heated with not damaging cooking performance, this induction heating cooking instrument comprises the 1st heater coil; Multiple heater coil group, is configured near the 1st heater coil, and the minimum outer diameter of heater coil is shorter than the minimum outer diameter of the 1st heater coil and have the center of circle different from the 1st heater coil; And control part, control the output (such as with reference to patent documentation 3) of the 2nd translation circuit driving the 1st translation circuit of above-mentioned 1st heater coil and drive above-mentioned multiple heater coil group.
As an induction heating cooking instrument again, have following induction heating cooking instrument, that is, this induction heating cooking instrument has: multiple circular heater coil, is configured at the roughly same plane of the below of top board, has the different centers of circle; Translation circuit, to above-mentioned multiple heater coil supply induction heating electric power; Control part, controls the output of above-mentioned translation circuit; And operating portion, to the start/stop, thermal power setting etc. of above-mentioned control part instruction heating, above-mentioned control part controls according to the instruction in aforesaid operations portion, make in multiple above-mentioned heater coil, more than half and less than whole above-mentioned heater coil supply induction heating electric power, not to remaining heater coil supply induction heating electric power, thus the above-mentioned cooked in above-mentioned heating object is made to produce convection current (such as with reference to patent documentation 4).
In addition similarly for the object making cooked produce convection current, also has following induction heating cooking instrument, namely, this induction heating cooking instrument comprises multiple circular heater coil, the plurality of circular heater coil is configured at the roughly same plane of the below of top board, there is the different centers of circle, in this induction heating cooking instrument, by the plurality of heater coil, more than half and amount less than whole above-mentioned heater coil supply induction heating electric power controls as more than the induction heating electric power of remaining heater coil (such as with reference to patent documentations 5).
Patent documentation 1: Japan Patent No. 2978069 publication (the 1st page, the 2nd page, Fig. 1)
Patent documentation 2: Japan Patent No. 3725249 publication (the 1st page, the 2nd page, Fig. 3)
Patent documentation 3: Japanese Unexamined Patent Publication 2010-73384 publication (the 2nd page, the 7th page, Fig. 3)
Patent documentation 4: Japanese Unexamined Patent Publication 2010-165656 publication (the 1st page, the 2nd page, Fig. 1, Fig. 2)
Patent documentation 5: Japanese Unexamined Patent Publication 2010-146882 publication (the 1st page, the 2nd page, Fig. 1, Fig. 2)
Summary of the invention
; in the past; utilize multiple circular coil, circular coil (central coil) and (non-circular) side coil to heat the bottom surface of a heating object as metal pan etc. overall simultaneously, produce from a side of pot towards the convection current of the flow path path length such with its another side be not in opposite directions also sufficient.In addition, there is following problem in induction heating cooking instrument, namely, even suppose home-use, also will promptly boiled hot water, stew is maintained high temperature or set point of temperature state (also referred to as insulation), or pan is heated to set point of temperature rapidly, and make the equalizing temperature of its entirety as much as possible, and make the temperature of edge, periphery of pot, after so-called pot surface temperature rises to the degree of hope, drop into the food materials etc. of the cooking, cooking menu desired by user has multiple, user cannot select the driving type of the heater coil being suitable for these cooking menus simply or automatically.
The present invention proposes in view of above-mentioned problem, and its main object is, provides a kind of have employed can promote that the liquid such as water, stew juice be positioned among heating object produces the induction heating cooking instrument of the control of convection current.
The heating objects such as the induction heating cooking instrument of the 1st technical scheme has: top board, the pot that mounting is put into for cooked, circular main heater coil, is configured in the below of above-mentioned top board, 1st secondary heater coil of flat pattern and the 2nd secondary heater coil, closely configure in the both sides of above-mentioned main heater coil, has the transverse width dimension less than the radius of main heater coil, translation circuit, respectively to above-mentioned main heater coil and the 1st secondary heater coil, the 2nd secondary heater coil supply induction heating electric power, control part, controls the output of above-mentioned translation circuit, and operating portion, to the beginning of above-mentioned control part instruction heating, thermal power setting etc., during above-mentioned control part arranges and does not supply induction heating electric power to above-mentioned 1st secondary heater coil, in this period, from above-mentioned translation circuit to above-mentioned 2nd secondary heater coil supply induction heating electric power, afterwards, arrange during stopping supplying induction heating electric power to above-mentioned 2nd secondary heater coil, in this period, from above-mentioned translation circuit to above-mentioned 1st secondary heater coil supply induction heating electric power, above-mentioned control part is repeatedly relative to the 1st secondary heater coil, the above-mentioned energising switching action of the 2nd secondary heater coil.Thereby, it is possible to promote that the liquid such as water, stew juice be positioned among heating object produces convection current.
The heating objects such as the induction heating cooking instrument of the 2nd technical scheme has: top board, the pot that mounting is put into for cooked, circular main heater coil, is configured in the below of above-mentioned top board, the secondary heater coil of more than 4 of flat pattern, closely configures in the both sides of above-mentioned main heater coil, has the transverse width dimension less than the radius of main heater coil, translation circuit, respectively to above-mentioned main heater coil and all secondary heater coil supply induction heating electric power, control part, controls the output of above-mentioned translation circuit, and operating portion, to the beginning of above-mentioned control part instruction heating, thermal power setting etc., above-mentioned secondary heater coil is divided for by more than half and the 1st group that forms less than total adjacent secondary heater coil, with the 2nd group that is made up of remaining secondary heater coil, during above-mentioned control part arranges and does not supply induction heating electric power to above-mentioned 1st group of secondary heater coil, in this period, from above-mentioned translation circuit to above-mentioned 2nd group of secondary heater coil supply induction heating electric power, afterwards, arrange during stopping supplying induction heating electric power to above-mentioned 2nd group of secondary heater coil, in this period, from above-mentioned translation circuit to above-mentioned 1st group of secondary heater coil supply induction heating electric power, above-mentioned control part is the secondary heater coil relative to the 1st group repeatedly, the above-mentioned energising switching action of the 2nd group of secondary heater coil.Thereby, it is possible to promote that the liquid such as water, stew juice be positioned among heating object produces convection current.
The heating objects such as the induction heating cooking instrument of the 3rd technical scheme has: top board, the pot that mounting is put into for cooked; Circular main heater coil, is configured in the below of above-mentioned top board; 1st secondary heater coil of flat pattern and the 2nd secondary heater coil, closely configure respectively in the both sides of above-mentioned main heater coil, has the transverse width dimension less than the radius of main heater coil; Translation circuit, respectively to above-mentioned main heater coil and the 1st secondary heater coil, the 2nd secondary heater coil supply induction heating electric power; Control part, controls the output of above-mentioned translation circuit; And operating portion, to the beginning, thermal power setting etc. of above-mentioned control part instruction heating, above-mentioned control part is from above-mentioned translation circuit to above-mentioned 2nd secondary heater coil supply ratio to the electric power that the induction heating electric power of above-mentioned 1st secondary heater coil supply is large, afterwards, reduce the induction heating electric power to above-mentioned 2nd secondary heater coil supply, supplied from above-mentioned translation circuit above-mentioned 1st secondary heater coil by the electric power larger than this electric power, above-mentioned control part is repeatedly relative to the above-mentioned energising switching action of the 1st secondary heater coil, the 2nd secondary heater coil.Thereby, it is possible to promote that the liquid such as water, stew juice be positioned among heating object produces convection current.
The heating objects such as the induction heating cooking instrument of the 4th technical scheme has: top board, the pot that mounting is put into for cooked, circular main heater coil, is configured in the below of above-mentioned top board, the secondary heater coil of more than 4 of flat pattern, closely configures in the both sides of above-mentioned main heater coil, has the transverse width dimension less than the radius of main heater coil, translation circuit, respectively to above-mentioned main heater coil and all secondary heater coil supply induction heating electric power, control part, controls the output of above-mentioned translation circuit, and operating portion, to the beginning of above-mentioned control part instruction heating, thermal power setting etc., above-mentioned secondary heater coil is divided for by more than half and the 1st group that forms less than total adjacent secondary heater coil, with the 2nd group that is made up of remaining secondary heater coil, above-mentioned control part is from above-mentioned translation circuit to above-mentioned 2nd group of secondary heater coil supply ratio to the electric power summation that the induction heating electric power summation of above-mentioned 1st group of secondary heater coil supply is large, afterwards, reduce the induction heating electric power summation to above-mentioned 2nd group of secondary heater coil supply, the electric power summation larger than this electric power summation is supplied from above-mentioned translation circuit above-mentioned 1st group of secondary heater coil, above-mentioned control part is the secondary heater coil relative to the 1st group repeatedly, the above-mentioned energising switching action of the 2nd group of secondary heater coil.Thereby, it is possible to promote that the liquid such as water, stew juice be positioned among heating object produces convection current.
The induction heating cooking instrument of the 5th technical scheme has: the heating objects such as pot, puts into for cooked; Top board, loads above-mentioned heating object; Circular main heater coil, is configured in the below of above-mentioned top board; 1st secondary heater coil of flat pattern and the 2nd secondary heater coil, closely configure respectively in the both sides of above-mentioned main heater coil, has the transverse width less than the radius of main heater coil; Translation circuit, respectively to above-mentioned main heater coil and the 1st secondary heater coil, the 2nd secondary heater coil supply induction heating electric power; Control part, controls the output of above-mentioned translation circuit; And operating portion, to the beginning, thermal power setting etc. of above-mentioned control part instruction heating, above-mentioned control part is relative to above-mentioned 1st secondary heater coil, from above-mentioned translation circuit with the 2nd thermal power supply induction heating electric power, meanwhile, relative to the 2nd secondary heater coil, from above-mentioned translation circuit with the 1st thermal power supply induction heating electric power less than the 2nd thermal power, add in the cooking and hanker, alternately change between the 1st secondary heater coil and the 2nd secondary heater coil with the secondary heater coil of above-mentioned 2nd thermal power heat driven.Thereby, it is possible to promote that the liquid such as water, stew juice be positioned among heating object produces convection current.
The induction heating cooking instrument of the 6th technical scheme has: the heating objects such as pot, puts into for cooked, top board, loads above-mentioned heating object, circular main heater coil, is configured in the below of above-mentioned top board, the secondary heater coil of more than 4 of flat pattern, closely configures in the both sides of above-mentioned main heater coil, has the transverse width less than the radius of main heater coil, translation circuit, respectively to above-mentioned main heater coil and all secondary heater coil supply induction heating electric power, control part, controls the output of above-mentioned translation circuit, and operating portion, to the beginning of above-mentioned control part instruction heating, thermal power setting etc., above-mentioned secondary heater coil is divided for by more than half and the 1st group that forms less than total adjacent secondary heater coil, with the 2nd group that is made up of remaining secondary heater coil, above-mentioned control part is relative to above-mentioned 1st group of secondary heater coil, from above-mentioned translation circuit with the 2nd thermal power summation supply induction heating electric power, meanwhile, the secondary heater coil relative to the 2nd group, from above-mentioned translation circuit with the 1st thermal power summation supply induction heating electric power less than the 2nd thermal power summation, add in the cooking and hanker, change with the 1st group of above-mentioned 2nd thermal power summation heat driven secondary heater coil.Thereby, it is possible to promote that the liquid such as water, stew juice be positioned among heating object produces convection current.
The induction heating cooking instrument of the 7th technical scheme has: the heating objects such as pot, puts into for cooked, top board, loads above-mentioned heating object, circular main heater coil, is configured in the below of above-mentioned top board, 1st secondary heater coil of flat pattern and the 2nd secondary heater coil, closely configure respectively in the both sides of above-mentioned main heater coil, has the transverse width less than the radius of main heater coil, translation circuit, respectively to above-mentioned main heater coil and the 1st secondary heater coil, the 2nd secondary heater coil supply induction heating electric power, control part, controls the output of above-mentioned translation circuit, and operating portion, to the beginning of above-mentioned control part instruction heating, thermal power setting etc., above-mentioned control part is during supplying induction heating electric power with the 1st thermal power to above-mentioned main heater coil, from above-mentioned translation circuit to above-mentioned 1st secondary heater coil with the 2nd thermal power supply induction heating electric power larger than above-mentioned 1st thermal power, the induction heating electric power to above-mentioned 1st secondary heater coil is stopped to supply afterwards, and from above-mentioned translation circuit to above-mentioned 2nd secondary heater coil with the 3rd thermal power supply induction heating electric power larger than above-mentioned 1st thermal power, above-mentioned control part is repeatedly relative to the 1st secondary heater coil, the above-mentioned energising switching action of the 2nd secondary heater coil.Thereby, it is possible to promote that the liquid such as water, stew juice be positioned among heating object produces convection current.
The induction heating cooking instrument of the 8th technical scheme has: the heating objects such as pot, puts into for cooked, top board, loads above-mentioned heating object, circular main heater coil, is configured in the below of above-mentioned top board, the secondary heater coil of more than 4 of flat pattern, closely configures in the both sides of above-mentioned main heater coil, has the transverse width less than the radius of main heater coil, translation circuit, respectively to above-mentioned main heater coil and all secondary heater coil supply induction heating electric power, control part, controls the output of above-mentioned translation circuit, and operating portion, to the beginning of above-mentioned control part instruction heating, thermal power setting etc., above-mentioned secondary heater coil is divided for by more than half and the 1st group that forms less than total adjacent secondary heater coil, with the 2nd group that is made up of remaining secondary heater coil, above-mentioned control part is during supplying induction heating electric power with the 1st thermal power to above-mentioned main heater coil, relative to above-mentioned 1st group of secondary heater coil, from above-mentioned translation circuit with the 2nd thermal power summation supply induction heating electric power larger than above-mentioned 1st thermal power, the induction heating electric power to above-mentioned 1st secondary heater coil is stopped to supply afterwards, and relative to above-mentioned 2nd group of secondary heater coil, from above-mentioned translation circuit with the 3rd thermal power summation supply induction heating electric power larger than above-mentioned 1st thermal power, above-mentioned control part is the secondary heater coil relative to the 1st group repeatedly, the above-mentioned energising switching action of the 2nd group of secondary heater coil.Thereby, it is possible to promote that the liquid such as water, stew juice be positioned among heating object produces convection current.
The induction heating cooking instrument of the 9th technical scheme has: the heating objects such as pot, puts into for cooked, top board, loads above-mentioned heating object, circular main heater coil, is configured in the below of above-mentioned top board, 1st secondary heater coil of flat pattern and the 2nd secondary heater coil, closely configure respectively in the both sides of above-mentioned main heater coil, has the transverse width less than the radius of main heater coil, translation circuit, respectively to above-mentioned main heater coil and the 1st secondary heater coil, the 2nd secondary heater coil supply induction heating electric power, control part, controls the output of above-mentioned translation circuit, and operating portion, to the beginning of above-mentioned control part instruction heating, thermal power setting etc., above-mentioned control part drives above-mentioned main heater coil off and on the 1st thermal power, and during the driving stopping this main heater coil, from above-mentioned translation circuit to above-mentioned 1st secondary heater coil with the 2nd thermal power supply induction heating electric power that the 1st thermal power during heat driven than main heater coil is large, the induction heating electric power to above-mentioned 1st secondary heater coil is stopped to supply afterwards, and from above-mentioned translation circuit to above-mentioned 2nd secondary heater coil with the 3rd thermal power supply induction heating electric power larger than above-mentioned 1st thermal power, above-mentioned control part is carrying out relative to the 1st secondary heater coil, after the above-mentioned energising switching action of the 2nd secondary heater coil, above-mentioned main heater coil is driven with the 1st thermal power, when this driving, stop the 1st secondary heater coil, the driving of the 2nd secondary heater coil.Thereby, it is possible to promote that the liquid such as water, stew juice be positioned among heating object produces convection current.
The induction heating cooking instrument of the 10th technical scheme has: the heating objects such as pot, puts into for cooked; Top board, loads above-mentioned heating object; Circular main heater coil, is configured in the below of above-mentioned top board; The secondary heater coil of more than 4 of flat pattern, closely configures in the both sides of above-mentioned main heater coil, has the transverse width less than the radius of main heater coil; Translation circuit, respectively to above-mentioned main heater coil and all secondary heater coil supply induction heating electric power; Control part, controls the output of above-mentioned translation circuit; And operating portion, to the beginning, thermal power setting etc. of above-mentioned control part instruction heating,
Above-mentioned secondary heater coil is divided for by more than half and the 1st group that forms less than total adjacent secondary heater coil, with the 2nd group that is made up of remaining secondary heater coil, above-mentioned control part drives above-mentioned main heater coil off and on the 1st thermal power, and during the driving stopping this main heater coil, relative to above-mentioned 1st group of secondary heater coil, from above-mentioned translation circuit with the 2nd thermal power summation supply induction heating electric power larger than the 1st thermal power of main heater coil, stop the induction heating electric power supply to above-mentioned 1st group of secondary heater coil afterwards, and relative to above-mentioned 2nd group of secondary heater coil, from above-mentioned translation circuit with the 3rd thermal power summation supply induction heating electric power larger than above-mentioned 1st thermal power, above-mentioned control part is carrying out the secondary heater coil relative to the 1st group, after the above-mentioned energising switching action of the 2nd group of secondary heater coil, above-mentioned main heater coil is driven with the 1st thermal power, when this driving, stop the 1st group of secondary heater coil, the driving of the 2nd group of secondary heater coil.Thereby, it is possible to promote that the liquid such as water, stew juice be positioned among heating object produces convection current.
The heating objects such as the induction heating cooking instrument of the 11st technical scheme has: top board, the pot that mounting is put into for cooked; Circular main heater coil, is configured in the below of above-mentioned top board; 1st secondary heater coil of flat pattern and the 2nd secondary heater coil, closely configure in the both sides of above-mentioned main heater coil, has the transverse width less than the radius of main heater coil; Translation circuit, respectively to above-mentioned main heater coil and multiple secondary heater coil supply induction heating electric power; Control part, controls the output of above-mentioned translation circuit; And operating portion, to the beginning, thermal power setting etc. of above-mentioned control part instruction heating, 2nd selection portion of the cooking menu of the 1st selection portion in aforesaid operations portion with the cooking menu paying attention to firing rate and the uniformity paying attention to heating, above-mentioned control part switches, when above-mentioned 1st selection portion is selected, make main heater coil identical with the direction of the high-frequency current in the adjacent area of the 1st secondary heater coil, the 2nd secondary heater coil, when the 2nd selection portion is selected, make the direction of this high-frequency current contrary.Thus, user can select and the control action cooked object and match.
The heating objects such as the induction heating cooking instrument of the 12nd technical scheme has: top board, the pot that mounting is put into for cooked, circular main heater coil, is configured in the below of above-mentioned top board, 1st secondary heater coil of flat pattern and the 2nd secondary heater coil, closely configure in the both sides of above-mentioned main heater coil, has the transverse width less than the radius of main heater coil, translation circuit, respectively to above-mentioned main heater coil and multiple secondary heater coil supply induction heating electric power, control part, controls the output of above-mentioned translation circuit, operating portion, to the beginning, thermal power setting etc. of above-mentioned control part instruction heating, and display part, show the heating condition that above-mentioned control part is indicated, there is in aforesaid operations portion the 1st selection portion of the cooking menu making firing rate preferential, 2nd selection portion of the cooking menu making the uniformity of heating preferential, with the 3rd selection portion making firing rate and the preferential cooking menu of heat insulation function, above-mentioned control part is when above-mentioned 1st selection portion is selected, with main heater coil and the 1st secondary heater coil, the direction of the coil current in the adjacent area of the 2nd secondary heater coil becomes identical mode heat driven, when the 2nd selection portion is selected, switch, become contrary to make the direction of this coil current, when the 3rd selection portion is selected, with main heater coil and the 1st secondary heater coil, the direction of the high-frequency current in the adjacent area of the 2nd secondary heater coil becomes identical mode heat driven, the direction of this high-frequency current is made to carry out heat driven on the contrary afterwards.Thus, user can select and the control action cooked object and match.
The heating objects such as the induction heating cooking instrument of the 13rd technical scheme has: top board, the pot that mounting is put into for cooked; Circular main heater coil, is configured in the below of above-mentioned top board; 1st secondary heater coil of flat pattern and the 2nd secondary heater coil, closely configure in the both sides of above-mentioned main heater coil, has the transverse width less than the radius of main heater coil; Translation circuit, respectively to above-mentioned main heater coil and multiple secondary heater coil supply induction heating electric power; Control part, controls the output of above-mentioned translation circuit; Operating portion, to the beginning, thermal power setting etc. of above-mentioned control part instruction heating; Display part, shows the heating condition indicated above-mentioned control part; And convection current promotes to control selection portion, the control mode of the convection current promoting cooked can be selected for user, above-mentioned control part is when above-mentioned selection portion is selected operation, control the direction of the high-frequency current in the adjacent area of main heater coil and the 1st secondary heater coil, the 2nd secondary heater coil, and make alternatively to carry out heat driven relative to the operation condition of above-mentioned multiple secondary heater coil.Thus, user can select and the control action cooked object and match.
According to the present invention, because main heater coil can be utilized to perform the heating action of heating object with at least 1 that is located at its side secondary heater coil, and according to the content of cooking menu, switch the interference of the magnetic flux between main heater coil and secondary heater coil and the state of booster action, so convection current when can promote the heating of cooked entirety expect the homogenizing of temperature.
In addition, according to the present invention, 2nd selection portion of the cooking menu of the 1st selection portion being provided with the cooking menu paying attention to firing rate and the uniformity paying attention to heating, when the 1st selection portion is selected, make main heater coil identical with the direction of the coil current in the adjacent area of the 1st secondary heater coil, the 2nd secondary heater coil, when the 2nd selection portion is selected, switch, make the direction of this coil current contrary, can efficiency high or effectively carry out induction heating cooking.
By above explanation, from needless to say when can provide a kind of heating of main heater coil monomer, even if when being combined with the heating of main heater coil and secondary heater coil both sides, induction heating cooking instrument that also can be corresponding with the cooking menu that user wishes, easy to use.
Accompanying drawing explanation
Fig. 1 is the block diagram of the basic structure of the built in type induction heating cooking instrument entirety representing embodiments of the present invention 1.
Fig. 2 is the vertical view of the load coil in the built in type induction heating cooking instrument of embodiments of the present invention 1.
Fig. 3 is heating action specification Fig. 1 of the load coil in the built in type induction heating cooking instrument of embodiments of the present invention 1.
Fig. 4 is the energising key diagram 1 of the load coil in the built in type induction heating cooking instrument of embodiments of the present invention 1.
Fig. 5 be the built in type induction heating cooking instrument entirety representing embodiments of the present invention 1 substantially add thermally operated rate-determining steps key diagram.
Fig. 6 is the vertical view of the variation of the load coil represented in the built in type induction heating cooking instrument of embodiments of the present invention 1.
Fig. 7 is the energising key diagram 2 of the load coil in the built in type induction heating cooking instrument of embodiments of the present invention 1.
Fig. 8 is the energising key diagram 3 of the load coil in the built in type induction heating cooking instrument of embodiments of the present invention 1.
Fig. 9 is heating action specification Fig. 2 of the load coil in the built in type induction heating cooking instrument of embodiments of the present invention 1.
Figure 10 is by the stereogram that represents of overall for the built in type induction heating cooking instrument of embodiments of the present invention 2 exploded ground.
The stereogram of the body entirety under the state that Figure 11 is the ceiling plate portion representing the built in type induction heating cooking instrument having unloaded embodiments of the present invention 2.
Figure 12 is the vertical view of the body entirety of the built in type induction heating cooking instrument of embodiments of the present invention 2.
Figure 13 is the stereogram of the state of the main member of formation such as dividing plate between the upper and lower of the built in type induction heating cooking instrument having unloaded embodiments of the present invention 2.
Figure 14 is the D1-D1 longitudinal section of Figure 10.
Figure 15 is the D2-D2 longitudinal section of Figure 10.
Figure 16 is represent the component shell of the built in type induction heating cooking instrument of embodiments of the present invention 2 and a part for cooling pipe main portion stereogram with cutting off.
Figure 17 is the vertical view of the configured in one piece of the heater coil of the built in type induction heating cooking instrument representing embodiments of the present invention 2.
Figure 18 is the vertical view in the induction heating source in the left side of the built in type induction heating cooking instrument representing embodiments of the present invention 2.
Figure 19 is the wiring instruction figure of the main heater coil in the induction heating source in the left side of the built in type induction heating cooking instrument of embodiments of the present invention 2.
Figure 20 is the main heater coil in the induction heating source in the left side of the built in type induction heating cooking instrument of embodiments of the present invention 2 and the amplification plan view of peripheral part thereof.
Figure 21 is the vertical view of the main heater coil coil supports body in the induction heating source in the left side of the built in type induction heating cooking instrument of embodiments of the present invention 2.
Figure 22 is the control circuit overall diagram of the built in type induction heating cooking instrument of embodiments of the present invention 2.
Figure 23 is the full-bridge mode circuit diagram in the main portion of control circuit of the built in type induction heating cooking instrument becoming embodiments of the present invention 2.
Figure 24 is the schematic drawing of the full-bridge mode circuit in the main portion of control circuit of the built in type induction heating cooking instrument becoming embodiments of the present invention 2.
Figure 25 loads large footpath pot and longitudinal section under adding thermally operated situation above the induction heating source, left side of the built in type induction heating cooking instrument of embodiments of the present invention 2.
Figure 26 is the longitudinal section of the central front part of the body of the built in type induction heating cooking instrument representing embodiments of the present invention 2.
Figure 27 is the vertical view of the synthetic display parts of the built in type induction heating cooking instrument representing embodiments of the present invention 2.
The vertical view of the display frame example of synthetic display parts when Figure 28 is the left IH heating source representing the built in type induction heating cooking instrument only using embodiments of the present invention 2.
The vertical view of the display frame example of synthetic display parts when Figure 29 is the left IH heating source representing the built in type induction heating cooking instrument only using embodiments of the present invention 2.
Figure 30 is the vertical view representing the display frame example of being carried out the synthetic display parts when cooking is heated at a high speed by the left IH heating source of the built in type induction heating cooking instrument of embodiments of the present invention 2.
Figure 31 be the built in type induction heating cooking instrument entirety representing embodiments of the present invention 2 substantially add thermally operated rate-determining steps key diagram.
Figure 32 is the flow chart 1 of the control action of the built in type induction heating cooking instrument of embodiments of the present invention 2.
Figure 33 is the flow chart 2 of the control action of the built in type induction heating cooking instrument of embodiments of the present invention 2.
The flow chart 3 of control action when Figure 34 is the thermal power change of the built in type induction heating cooking instrument representing embodiments of the present invention 2.
Figure 35 represents in the built in type induction heating cooking instrument of embodiments of the present invention 2, the figure of the value of main heater coil MC when thermal power is 3KW and 1.5KW and the thermal power value (h eating power) of secondary heater coil SC1 ~ 4.
Figure 36 represents in the built in type induction heating cooking instrument of embodiments of the present invention 2, the figure of the value of main heater coil MC when thermal power is 500W and the thermal power value (h eating power) of secondary heater coil SC1 ~ 4.
Figure 37 represents the left IH heating source of built in type induction heating cooking instrument only using embodiments of the present invention 3, the vertical view of the display frame example of synthetic display parts when heating large footpath pot.
Figure 38 is the left IH heating source only using the built in type induction heating cooking instrument of embodiments of the present invention 3, heats the longitudinal section when pot of general diameter.
Figure 39 represents the left IH heating source of built in type induction heating cooking instrument only using embodiments of the present invention 3, the vertical view of the display frame example of synthetic display parts when heating large footpath pot.
Figure 40 represents the left IH heating source of built in type induction heating cooking instrument only using embodiments of the present invention 3, the vertical view of the display frame example of synthetic display parts when heating large footpath pot.
Figure 41 represents the left IH heating source of built in type induction heating cooking instrument only using embodiments of the present invention 3, the vertical view of the display frame example of synthetic display parts when heating the large-scale pot of other Long Circle.
Figure 42 represents the left IH heating source of built in type induction heating cooking instrument only using embodiments of the present invention 3, the vertical view of the display frame example of synthetic display parts when heating the pot of general diameter.
Embodiment
Execution mode 1
Fig. 1 ~ Fig. 9 is the figure of the induction heating cooking instrument representing embodiments of the present invention 1, represents the example of the induction heating cooking instrument of in-built (loading) type.
Fig. 1 is the block diagram of the basic structure of the built in type induction heating cooking instrument entirety representing embodiments of the present invention 1.
Fig. 2 is the vertical view of the load coil in the built in type induction heating cooking instrument of embodiments of the present invention 1.
Fig. 3 is heating action specification Fig. 1 of the load coil in the built in type induction heating cooking instrument of embodiments of the present invention 1.
Fig. 4 is the energising key diagram 1 of the load coil in the built in type induction heating cooking instrument of embodiments of the present invention 1.
Fig. 5 be the built in type induction heating cooking instrument entirety representing embodiments of the present invention 1 substantially add thermally operated rate-determining steps key diagram.
Fig. 6 is the vertical view of the variation of the load coil represented in the built in type induction heating cooking instrument of embodiments of the present invention 1.
Fig. 7 is the energising key diagram 2 of the load coil in the built in type induction heating cooking instrument of embodiments of the present invention 1.
Fig. 8 is the energising key diagram 3 of the load coil in the built in type induction heating cooking instrument of embodiments of the present invention 1.
Fig. 9 is heating action specification Fig. 2 of the load coil in the built in type induction heating cooking instrument of embodiments of the present invention 1.
In addition, in the various figures identical Reference numeral is marked to identical part or suitable part.
Term used is in embodiments of the present invention defined respectively.
" operation condition " of so-called heater block D, referring to the condition that is electric, physics for heating, is the general name of conduction time, turn on angle (thermal power), heating-up temperature, energising type (continuously energising, interrupted energising etc.) etc.Namely the power on condition of heater block D is called.
So-called " display ", refer to and utilize word, symbol, diagram, color, change with or without luminescence, luminosity etc., visually notify the operation condition of user's cooking device, related information referenced by the cooking (comprise remind abnormal use object, notice abnormal operation state the object related information of generation.Hereinafter simply referred to as " cooking related information ") action.But, so-called " on a large scale illuminating part " described later, " separate radiation portion " be luminous, when lighting display and " the 1st display ", " the 2nd display " " display " under such circumstances, only refer to by luminous, light and send the light of the color of regulation, as the color of light, brightness, continuously light with blink states change the situation lighting form and visual effect and sometimes display shown as " change " or " switching " etc.In addition, " luminescence " and " lighting " is the identical meaning, but because the situation that the light-emitting components such as light-emitting diode itself are luminous is called luminescence under most cases, the situation of lamp luminescence is called and lights, so in the following description, sometimes record in the lump in this wise.In addition, in the luminescence of electric or physics or in lighting, when user cannot only arrive user with the weak light of the degree of visual confirmation, because user cannot confirm the result of " luminescence " or " lighting ", so as long as no especially clearly recording, do not meet " luminescence " or " lighting " such term.Such as top board described later is not generally water white transparency and its raw material itself have shallow color before application etc. is carried out on surface, so the transmitance of luminous ray is not 100%, if therefore the light of such as light-emitting diode is weak, then can cause on top board cannot the situation of this light of visual identity.
As " display unit " of display part, as long as no writing exactly especially, just comprise liquid crystal (LCD), various light-emitting component (example as semiconductor light-emitting elements has LED(LightEmittingDiode, light-emitting diode), LD(LaserDiode) these 2 kinds), organic electric field luminescence (ElectroLuminescence:EL) element etc.Therefore, display unit comprises the display frame such as liquid crystal panel, EL picture.But the display unit in " on a large scale illuminating part " described later and " separate radiation portion " also can be the simple luminous component such as lamp, LED.
So-called " notification ", refers to and utilizes display or electric sound (referring to the sound electrically made or synthesize), identifies the operation condition of control assembly to make user, cooks the action of the notice for the purpose of related information.
So-called " notification parts ", as long as no writing exactly especially, just comprising and utilizing buzzer, loud speaker etc. can hear the notification parts of sound, utilize the notification parts of word, symbol, diagram, animation or visible ray.
So-called " collaborative heating ", refers to by supplying electric power respectively to the heater coil of more than 2 that become induction heating source, the action of the same heating object of induction heating.In the present invention, in execution mode 2 and 3 described later, represent the example of collaborative heating.
Below, with reference to Fig. 1 ~ Fig. 9, while explain the execution mode 1 of induction heating cooking instrument of the present invention.Fig. 1 and Fig. 2 is the vertical view of the load coil entirety roughly illustrating induction heating cooking instrument 1 of the present invention.
In fig. 1 and 2, induction heating cooking instrument of the present invention to comprise the body A(of 1 rectangle not shown).This body A comprises: ceiling plate portion B(is not shown), form the upper surface of body A, except a part for surrounding, the surface of whole upper surface is covered by top board; Housing section C(is not shown), the surrounding's (exterior contour) beyond the upper surface of formation body A; Heater block D(main heater coil MC described later etc.), utilize heating kettle, the food etc. such as electric energy; Functional unit E, is operated by user; Control assembly F, accepts the signal from functional unit, controls heater block; And display unit G, the operation condition of display heater block.
In addition, also there is following cooking device, although do not use in execution mode 1, comprise the part as heater block D, be called as the electric heating element of grid storehouse (grid heating chamber) or roaster.In FIG, E1 is provided at the 1st selection portion in the functional unit E of the upper surface front part of body A, 1st selection portion E1 carries out input operation by the key using static capacity to change the contact detected with or without input, the push type key etc. with mechanical type electric contact, E2 is the 2nd selection portion in the same manner, E3 is the 3rd selection portion in the same manner, and user can select various cooking menu described later by these selection portions of operation.About the feature of the function of each selection portion E1 ~ E3 is described in detail below.
In fig. 1 and 2, MC is the main heater coil of induction heating source (hereinafter referred to as " IH heating source "), is closely configured at the below of the top board (not shown) of mounting heating object N.In figure, with being the profile of the heating object N such as pot represented by the circle of dotted line.
In addition, this main heater coil is by being bundled into wire harness in the shape of a spiral by the fine rule of about the 0.1mm ~ 0.3mm of about 30, and twist while reel 1 or many these wire harness (hereinafter referred to as assembly line), using central point X1 as basic point, outer shape becomes circular mode, is finally configured as disc.The diameter (maximum outside diameter size) of main heater coil MC is roughly about 180mm ~ 200mm, and radius R 1 is 90 ~ 100mm.Preferably in 1, such as, possesses the ability that maximum consumption electric power (maximum heat power) is 1.5KW.
SC1 ~ SC4 is the secondary heater coils of 4 Long Circles, equally spaced configure symmetrically respectively in all around using the central point X1 of above-mentioned main heater coil MC as basic point, transversal dimensions radially observing from central point X1, namely " thickness " (also referred to as " transverse width dimension ") WA is the size of about 50% ~ 30% of the radius R 1 of above-mentioned main heater coil MC, uses WA to be set to the secondary heater coil of 40mm in the example of Fig. 1, Fig. 2.In addition, major diameter MW is about 2 times of above-mentioned R1, is namely identical with the diameter of main heater coil MC (maximum outside diameter size), about 180mm ~ 200mm.In addition, " side " of so-called main heater coil MC, particularly when the explanation with other does not have contradiction, if with Fig. 2, right side, left side, yes comprises the upper side and lower side (nearby side), so-called " both sides " refer to left and right two sides certainly, also refer to front and back and incline direction.
4 secondary heater coil SC1 ~ SC4, at the outer peripheral face of above-mentioned main heater coil MC, keep ground, space 271 configuration in the space (size from a few about mm to 1cm) of regulation.Secondary heater coil SC1 ~ SC4 (keeps space 273) mutually roughly at equal intervals each other.This secondary heater coil SC1 ~ SC4 is also by twisting reel 1 or many assembly lines, outer shape is made to become Long Circle, ellipse along the direction winding specified assembly line, afterwards in order to keep shape to utilize contained part to restrain partly, or entirety is solidified to form by heat-resistant resin etc.The shape of 4 secondary heater coil SC1 ~ SC4 planes is identical, longitudinal and transverse, highly (thickness) size be also all identical size.Thus, 1 secondary heater coil is manufactured 4, be configured in 4 positions.
As shown in Figure 2, around the main coil MC of the radius R 1 from central point X1, its tangential direction is just in time consistent with the center line of the length direction of each secondary heater coil SC1 ~ SC4 for these 4 secondary heater coil SC1 ~ SC4.In other words, consistent with long axis direction.
Secondary heater coil SC1 ~ SC4 assembly line separately bends to Long Circle and extends, and electrical resistance ground forms a closed circuit.In addition, the vertical direction size (also referred to as height dimension, thickness) of main heater coil MC and the vertical direction of each secondary heater coil SC1 ~ SC4 measure-alike, and main heater coil MC and each secondary heater coil SC1 ~ SC4 is horizontally set, fixing, become same size with the interval in opposite directions of the lower surface of the upper surface and above-mentioned top board that make them.
In fig. 2, DW represents the outside dimension of the heating object N such as metal pot.In the example of this Fig. 2, according to the diameter of main heater coil MC as described above and the thickness WA of secondary heater coil SC1 ~ SC4, the overall dimension DW of heating object N is about 220mm ~ 240mm.
Fig. 1 is the circuit block diagram of the supply unit being built in induction heating cooking instrument 1.Supply unit of the present invention roughly comprises: converter (such as also referred to as diode bridge circuit or rectifier circuit), is transformed to direct current by three-phase alternating-current supply; Smoothing capacitor, is connected to the output of converter; Main translation circuit (power circuit part) MIV, for the main heater coil MC be connected in parallel with this smoothing capacitor; And subcommutation circuit (power circuit part) SIV1 ~ SIV4, each secondary heater coil SC1 ~ SC4 similarly for being connected in parallel with smoothing capacitor.
Direct current from above-mentioned converter is transformed to high-frequency current by main translation circuit MC and subcommutation circuit SIV1 ~ SIV4, mutual respectively to main heater coil MC and secondary heater coil SC1 ~ SC4() supply high frequency electric current independently.
Generally speaking, be positioned in the presence or absence of the heating object N of the top of load coil and size (area) because the impedance of load coil is depended on and changed, so along with this change, the magnitude of current flowing through above-mentioned main translation circuit MIV and subcommutation circuit SIV1 ~ SIV4 also changes.In supply unit of the present invention, there is the current detecting part (detection part) 280 for detecting the respective magnitude of current flowing through main heater coil MC and secondary heater coil SC1 ~ SC4.This current detecting part is the one of heating object described later mounting judging part.
According to the present invention, the magnitude of current flowing through main heater coil MC and secondary heater coil SC1 ~ SC4 is detected by using current detecting part 280, infer whether heating object N is positioned in the top of each coil, or whether the bottom area of heating object N is larger than setting, and pass on this inferred results, so the carrying state of heating object N can be detected accurately to control part (hereinafter referred to as " circuit for controlling electricity turning ") 200.
In addition, as the parts of the carrying state of detection heating object N, employ the current detecting part 280 detecting and flow through the magnitude of current of main translation circuit MIV and subcommutation circuit SIV1 ~ SIV4, but be not limited to this, other the arbitrary transducer such as mechanical sensor, optical pickocff also can be used to detect the carrying state of heating object N.
The circuit for controlling electricity turning 200 of supply unit of the present invention as shown in the figure, is connected to current detecting part 280, according to the carrying state of heating object N, gives control signal to main translation circuit MIV and subcommutation circuit SIV1 ~ SIV4.Namely, circuit for controlling electricity turning 200 accepts the signal (show the data of the carrying state of heating object N) relevant to the magnitude of current flowing through main heater coil MC and secondary heater coil SC1 ~ SC4 detected by current detecting part 280, when the diameter being judged as not loading heating object N or heating object N is less than setting (such as Ф 120mm), control main translation circuit MIV and subcommutation circuit SIV1 ~ SIV4 selectively, supply to the high-frequency current of these main heater coil MC and secondary heater coil SC1 ~ SC4 is forbidden or (when starting to supply by this supply) stopping.
According to the present invention, circuit for controlling electricity turning 200, by supplying the control signal corresponding to the carrying state of heating object N to main translation circuit MIV and subcommutation circuit SIV1 ~ SIV4, can control the power supply to main heater coil MC and secondary heater coil SC1 ~ SC4 independently of each other.In addition, off-state is set to) by not driving the main heater coil MC(being positioned at central authorities, and drive all secondary heater coil SC1 ~ SC4(to be set to on-state), also can realize the cooking method that the pot surface (side of pot) of a preheating pan etc. is such.
Concrete action is then described, but the main cooking menu that can be performed by the circuit for controlling electricity turning 200 of the core forming said control assembly F is in the present invention described before this.
Heated at high speed pattern (be with the preferential cooking menu of firing rate, selected by the 1st selection portion E1) can manually set the thermal power putting on heating object N.
User from the total thermal power of main heater coil MC and secondary heater coil be in the scope of 120W ~ 3.0KW below 9 grades among selected 1 grade.
120W、300W、500W、750W、1.0KW、1.5KW、2.0KW、2.5KW、3.0KW。
The thermal power ratio (hereinafter referred to as " major-minor thermal power ratio ") of main heater coil MC and secondary heater coil SC1 ~ SC4 is automatically determined by circuit for controlling electricity turning 200, make the limit being no more than the above-mentioned total thermal power that user have selected, and becoming in the scope of regulation thermal power ratio, user cannot at random set.Such as major-minor thermal power ratio is (during large thermal power) 2:3 ~ (during little thermal power) 1:1.
Main heater coil MC and secondary heater coil SC1 ~ SC4 is driven via storage capacitors simultaneously, and in this case, the direction of the high-frequency current in the region that both are adjacent is controlled so as to unanimously.
Fried pattern (automatically) (be the cooking menu of requirement firing rate and heat insulation function, selected by the 3rd selection portion E3)
By arched for the heating object N(days bran having put into fried oil etc.) be heated to the temperature (the 1st operation) of regulation, circuit for controlling electricity turning 200 automatically regulates thermal power (the 2nd operation) afterwards, maintains prescribed limit to make the temperature of heating object N.
1st operation: the temperature (such as 180 DEG C) being promptly heated to regulation.
Main heater coil thermal power is 2.5KW
2nd operation: to be friedly here implemented, drops into the food materials etc. of sky bran sieve.Transport maximum 30 minutes.In this operation, (arbitrarily) thermal power setting undertaken by thermal power configuration part is prohibited.After 30 minutes, heating action terminates (also can indicate prolongation) automatically.
Major-minor thermal power is all automatically determined than in the 1st operation, the 2nd operation in prescribed limit, and user at random cannot set the thermal power ratio of main heater coil and secondary heater coil.Such as major-minor thermal power ratio is (during large thermal power) 2:3 ~ automatically change to (during little thermal power) 1:1.
Major and minor heater coil is driven via storage capacitors simultaneously in the 1st operation, and the flowing of the high-frequency current of the coil in region adjacent each other is consistent.This is to promptly be heated to set point of temperature.Be driven via storage capacitors simultaneously similarly in the 2nd operation, make the flowing of electric current consistent.But, if continue in the state with low uncertainty of fried midway temperature, then make sense of current contrary, seek the homogenizing heated.
Preheating mode is (with the cooking menu that the uniformity heated is preferential.Selected by the 2nd selection portion E2)
Forbid thermal power setting and change, by in advance determined thermal power carry out the 1st preheating procedure heating heating object N, and after the 1st preheating procedure terminates, (by utilizing the detected temperatures signal from temperature sensor) carries out insulation operation heating object N being maintained set point of temperature scope.
Preheating procedure: main heater coil 1.0KW(fixes)
Secondary heater coil 1.5KW(fixes)
Insulation operation: maximum 5 minutes.When not carrying out the setting of (arbitrarily) thermal power within this period, after 5 minutes, heat action automatically terminate.
Main heater coil 300W ~ 100W(user can not set)
Secondary heater coil 300W ~ 100W(user can not set)
When carrying out arbitrary thermal power setting in during being incubated operation, identical with heated at high speed.
Arbitrary thermal power is set, user can from the total thermal power of main heater coil MC and secondary heater coil be 120W ~ 3.0KW scope in 9 following grades among selected 1 grade.
120W、300W、500W、750W、1.0KW、1.5KW、2.0KW、2.5KW、3.0KW。
In this case, major-minor thermal power automatically determines than by circuit for controlling electricity turning 200, and make to become in the scope of regulation thermal power ratio, user cannot at random set.Such as major-minor thermal power ratio is (during large thermal power) 2:3 ~ (during little thermal power) 1:1.
Major and minor heater coil is driven via storage capacitors simultaneously in preheating procedure, but the flowing of the high-frequency current in region now adjacent each other is complete rightabout.This in order to pay attention to, the magnetic flux produced from the heater coil of both sides in adjacent area is interfered, and makes heating intensity homogenizing.Also be driven via storage capacitors simultaneously in insulation operation, but the direction of the high-frequency current in region adjacent each other is contrary.This is the temperature distribution homogenization in order to entirety.
In addition, in insulation operation and after boiling, based on the instruction of user, start convection current and promote to control.This convection current relevant promotes that control is aftermentioned.
Pattern of heating up water (be with the preferential cooking menu of firing rate, selected by the 1st selection portion E1)
User starts to heat the water in heating object N with arbitrary thermal power, water boiling (utilizes temperature sensor, according to the information such as temperature, the change of temperature rising degree of heating object N, it is fluidized state that circuit for controlling electricity turning 200 judges) time, utilize display unit G that its purport is notified user.Afterwards, thermal power is automatically set, and maintains 2 minutes fluidized states at this point.
To heat up water operation:
The thermal power that main heater coil and secondary heater coil add up to is that 120W ~ 3.0KW(sets arbitrarily among 9 grades of thermal power 1 ~ thermal power 9.Default setting value is thermal power 7=2.0KW).
Major-minor thermal power automatically determines than by circuit for controlling electricity turning 200, and make the limit for being no more than the above-mentioned total thermal power that user have selected, and become in the scope of regulation thermal power ratio, user cannot at random set.Such as major-minor thermal power ratio is (during large thermal power) 2:3 ~ (during little thermal power) 1:1.
Insulation operation: maximum 2 minutes.After 2 minutes, heat action automatically terminate.
Main below heater coil 1.0KW (user can not set)
Secondary below heater coil 1.5KW (user can not set)
In this period, when user sets arbitrary thermal power, identical with heated at high speed.Thermal power also can from be positioned at 120W ~ 3.0KW scope 9 grades among arbitrarily select one.
Until boiling, main heater coil MC and secondary heater coil SC1 ~ SC4 is driven via storage capacitors simultaneously, and be now controlled so as to, the direction of the high-frequency current in region adjacent each other is consistent.The direction of boiling after-current becomes contrary.
Pattern of cooking (is the preferential cooking menu of the uniformity that heats.Selected by the 2nd selection portion E2)
User settles and is incorporated with the rice of appropriate amount and the container as heating object N of water, and heats this container according to the program of cooking (absorb water a series of programs such as operation, heating process, boiling operation, steaming process) of regulation, automatically cooks.
Water suction operation and operation of cooking
(user can not set main below heater coil 0.6KW.Automatically change according to the carrying out of operation)
(user can not set secondary below heater coil 0.7KW.Automatically change according to the carrying out of operation)
Steaming process: 5 minutes
Main coil heating zero (thermal power 0W)
Insulation operation: maximum 5 minutes.
Main below heater coil 200W (user can not set)
Secondary below heater coil 200KW (user can not set)
Major and minor heater coil is driven via storage capacitors simultaneously, and is controlled so as to, and the flowing of the electric current of the high frequency in the region that it is adjacent each other becomes rightabout.This in order to pay attention to, the magnetic flux produced from the heater coil of both sides in adjacent area is interfered with each other, and makes heating intensity homogenizing.
In addition, after operation of cooking terminates, when detecting that heating object N is not positioned on major and minor heater coil by testing circuit portion (heating object mounting test section) 280, or when similarly detecting that heating object N is not positioned on major and minor heater coil by heating object mounting test section in steaming process with the arbitrary operation in insulation operation, major and minor heater coil stops heating action at once simultaneously.
The pattern of boiling of scalding (be with the preferential cooking menu of firing rate, selected by the 1st selection portion E1)
Heating process: (to boiling)
Can manually set the thermal power putting on heating object N.
User is selected 1 grade among 9 grades in the scope of 120W ~ 3.0KW from the total thermal power of main heater coil MC and secondary heater coil.
120W、300W、500W、750W、1.0KW、1.5KW、2.0KW、2.5KW、3.0KW。
Default value be 2KW(when user does not select thermal power, with 2KW start heating)
Major-minor thermal power automatically determines than by circuit for controlling electricity turning 200, and make to become in the scope of regulation thermal power ratio, user cannot at random set.Such as major-minor thermal power ratio is (during large thermal power) 2:3 ~ (during little thermal power) 1:1.
After boiling: time water boiling (utilize temperature sensor, according to the information such as temperature, the change of temperature rising degree of heating object N, it is fluidized state that control part is inferred), this situation is notified user.Continuous 30 minutes afterwards (can extend), automatically continues to heat action with default value (600W), and to maintain fluidized state, but user also at random can select later thermal power of seething with excitement.
Until boiling throughout whole heating process, main heater coil MC and secondary heater coil SC1 ~ SC4 is driven via storage capacitors simultaneously, and is controlled so as to, and the direction of the high-frequency current in region adjacent each other is consistent.In addition after boiling, based on the operation of user, start convection current and promote to control.This convection current relevant promotes that control is aftermentioned.
To heat up water+holding mode (be with firing rate and the preferential cooking menu of uniformity, selected by the 3rd selection portion E3)
User starts to heat the water in heating object N with arbitrary thermal power, water boiling (utilizes temperature sensor, according to the information such as temperature, the change of temperature rising degree of heating object N, it is fluidized state that control part is inferred) time, utilize display part G that this situation is notified user.Afterwards, thermal power is automatically set, and maintains 2 minutes fluidized states at this point.
To heat up water operation:
The thermal power that main heater coil and secondary heater coil add up to is that 120W ~ 3.0KW(sets arbitrarily among 9 grades of thermal power 1 ~ thermal power 9.Default setting value is thermal power 7=2.0KW).
Major-minor thermal power automatically determines than by circuit for controlling electricity turning 200, and make the limit for being no more than the above-mentioned total thermal power that user have selected, and become in the scope of regulation thermal power ratio, user cannot at random set.Such as major-minor thermal power ratio is (during large thermal power) 2:3 ~ (during little thermal power) 1:1.
Insulation operation: maximum 10 minutes.After 10 minutes, heat action automatically terminate.
Main below heater coil 1.0KW (user can not set)
Secondary below heater coil 1.5KW (user can not set)
Until boiling, main heater coil MC is controlled so as to consistent with the direction of the high-frequency current in the adjacent region of secondary heater coil SC1 ~ SC4.After boiling, sense of current becomes contrary.In addition after boiling, based on the operation of user, start convection current and promote to control.This convection current relevant promotes that control is aftermentioned.
Below, with reference to Fig. 5, while the elemental motion of induction heating cooking instrument of the present invention is described.First, connect main power source, when user is indicated by operating portion (not shown) and heats warming-up exercise, by using above-mentioned current detecting part 280, detect the magnitude of current flowing through main heater coil MC and secondary heater coil SC1 ~ SC4, judge whether to be placed with heating object N above respective coil, or whether the bottom area of heating object N is larger than setting, and its result is passed on (step MS1) to the circuit for controlling electricity turning 200 as control part.
When pot is applicable, circuit for controlling electricity turning 200 make to be arranged at operating portion E or the display unit G near it, such as liquid crystal display picture, the cooking menu (MS2) desired by selecting is urged in display.When pot is unaccommodated transformable pot (pot etc. of bottom surface depression), abnormal little pot etc., implements heating and forbid processing (MS6).
Utilize operating portion to select when user, when have input cooking menu, thermal power, cooking length of time etc., formally start to heat action (MS4).
As the cooking menu that display unit G shows, be above-mentioned " heated at high speed pattern ", " fried pattern ", " pattern of heating up water ", " preheating mode ", " pattern of cooking ", " pattern of boiling of scalding ", "+holding mode of heating up water " these 7.In the following description, omit the description that pattern is such, such as " heated at high speed pattern " is recited as " heated at high speed " sometimes.
When user have selected arbitrary one among above-mentioned 7 cooking menus, the control model corresponding with these menus is automatically selected by the plug-in of circuit for controlling electricity turning 200, set main heater coil MC, secondary heater coil SC1 ~ SC4 could be energized separately, turn on angle (thermal power), conduction time etc.Cooking menu is utilized to make display part carry out the display (MS5) of urging user to set arbitrary thermal power, conduction time etc.
In addition, it is 3 that above-mentioned 1st, the 2nd, the 3rd selection portion E1, E2, E3 add up to, in contrast, it is 7 that cooking menu shown by above-mentioned display unit G adds up to, and in fact such as has among E1 and can select " heated at high speed " and " heating up water ", " scald and boil " these 3 keys.There are " preheating " and " cooking " these 2 keys equally among selection portion E2, there are among this external selection portion E3 " heat up water+be incubated " and " fried " these 2 keys.
(convection current promotes to control)
Then, illustrate that the convection current as feature of the present invention promotes to control.Convection current promotes to control to be divided into 3 classes substantially.In addition, boiling after or at a simmer before, such as when temperature sensor detects that the temperature of heating object N rises to 98 DEG C, or be judged as from starting to cook inferior close to situation during fluidized state after the elapsed time at circuit for controlling electricity turning 200, preferably user at random sends the period of instruction after this, such as, after just having operated, start convection current to promote to control, but when specific cooking menu, as long as also can be that user does not forbid or do not stop heating halfway after becoming fluidized state, just automatically change convection current into promote to control.This convection current relevant promotes that control is aftermentioned.
(the 1st convection current promotes to control)
This control is during main heater coil MC does not drive, and is heated the control of heating object N by secondary heater coil SC1 ~ SC4.
(A) of Fig. 2 represents by each translation circuit SIV1 ~ SIV4 simultaneously to the state of 4 secondary heater coil SC1 ~ SC4 supply high frequency electric currents.In the same manner, (B) of Fig. 2 represents not to 4 secondary heater coil SC1 ~ SC4 supply high frequency electric currents, and heating action stops, on the other hand, by main translation circuit MIV only to main heater coil MC supply high frequency electric current, by the state that heat driven.
(A) of Fig. 3 represent by each translation circuit SIV1, SIV3 separately and simultaneously in 4 secondary heater coil SC1 ~ SC4, the state of group (hereinafter also referred to " group ") the supply high frequency electric current of adjacent each other 2 secondary heater coil SC1, SC3.In this case, the heating part of heating object N to become directly over adjacent 2 secondary heater coil SC1, SC3 and throughout the part of this band shape between the two.Thus, with this heating part for benchmark, be accommodated in the cooked of the inside of heating object N, such as Miso Soup, stew etc. are heated by the part directly over 2 secondary heater coil SC1, SC3 with throughout this band shape between the two, produce upwelling.Thus, continue this state time, as in Fig. 3 (A) by as shown in arrow mark YC, can produce towards the convection current of the length apart from secondary heater coil SC1, SC3 opposition side farthest.Become sinking in opposition side, and easily generation flows transversely through the bottom of cooked and again returns the such backflow of secondary heater coil SC1, SC3.
In other words, can increase through that temperature rises and the liquid cooked that naturally rises is declined again by temperature and the length in a series of path (also referred to as circulation road or convection cell) that returns.
RL1 represents that the liquid of the cooked risen side towards the opposite is moved, until become the length of the convection path of the length of sinking.The starting point of RL1 is the central point XS of secondary heater coil SC1 ~ SC4.In addition RL2 represents from the length of a secondary heater coil SC1 to the wall of the opposition side of the pot as heating object N etc.As known from Fig. 3 (A), RL1 with RL2 identical (RL1=RL2).
Then as shown in (B) of Fig. 3, represent by each translation circuit SIV1, SIV2 independent and simultaneously in 4 secondary heater coil SC1 ~ SC4, the state of 2 secondary heater coil SC1, SC2 supply high frequency electric current I B adjacent each other.The direction flowing through the electric current I B of secondary heater coil SC1, SC2 is mutual rightabout.In this case, the heating part of heating object N to become directly over adjacent 2 secondary heater coil SC1, SC2 and throughout the part of this band shape between the two, thus the direction of the convection current produced become as in Fig. 3 (B) with as shown in arrow mark YC.
Equally, as shown in (C) of Fig. 3, represent by each translation circuit SIV2, SIV4 independent and simultaneously in 4 secondary heater coil SC1 ~ SC4, the state of the group supply high frequency electric current I B of adjacent each other 2 secondary heater coil SC2, SC4.In this case, the heating part of heating object N to become directly over adjacent 2 secondary heater coil SC2, SC4 and throughout the part of this band shape between the two, so produce convection current direction as in Fig. 3 (C) with as shown in arrow mark YC, become and the diametical direction of state shown in Fig. 3 (A).
As the above description of the embodiment, the 1st convection current promotes to control to be the mode that the group of that utilize in 4 secondary heater coil SC1 ~ SC4, adjacent 2 secondary heater coils carries out main heating.In other words, be that drive in 4 secondary heater coils, more than half and less than the mode of total secondary heater coil simultaneously.1st convection current promotes that controlling not is realize when only having 4 secondary heater coil SC1 ~ SC4, such as, when use 6 secondary heater coils, as long as drive 3 or 4 secondary heater coils simultaneously.That is, be a group by 3 or 4 secondary heater coils, heat driven in units of this group.
Promote to control according to the 1st convection current, the flowing promoting convection current can be caused, make the transverse width entirety flowed throughout pot, from one side to opposition side in opposite directions, and return from opposition side to one side on the contrary.Even if do not produce convection current in addition, because the position of being heated by secondary heater coil SC1 ~ SC4 of pot changes at the outer circumferential side of main heater coil MC, so when particularly heating the high cooking liquid of thick viscosity, also can suppress because heat only concentrate on a position and moisture evaporation, local burned such situation.
For from Fig. 3 (A) to Fig. 3 (B), preferred opportunity of switching successively to Fig. 3 (C) from Fig. 3 (B), different but different according to cooked, but at least after the temperature of cooked has been seethed with excitement, or from before at a simmer close to beginning the state of 100 DEG C, such as switch with 10 ~ 15 seconds intervals later.
Or, when set 30 minutes and endure stew the cooking, also can implement throughout whole 5 minutes from before before end of cooking 5 points to terminating.In addition, in order to make soup juice easily be absorbed by the food materials such as vegetables, meat, such as, also within each 30 seconds, repeatedly several can be carried out.Even if in fact with the secondary heater coil that identical thermal power heat driven is identical, because the intensity of the convection current produced is large by the impact of the viscosity of the liquid of cooked, preferably select the thermal power, energization interval, order etc. of 4 secondary heater coil SC1 ~ SC4 according to the experimental result of the various cooking.
Promote to control according to the 1st convection current, on-state is set to by driving corresponding with the circumference of heating object N (circumferentially configuring at predetermined intervals same) 4 secondary heater coil SC1 ~ SC4(), also can realize the cooking method (heating means) that the pot surface (side of pot) of a preheating pan etc. is such.
Fig. 4 is the key diagram on the opportunity representing the electric current flowing through main heater coil MC and secondary heater coil SC1 ~ SC4, the on-state of the high-frequency current being applied with heat driven is expressed as " connection ", the off-state of the high-frequency current not being applied with heat driven is expressed as "off".
As in this, as shown in dashed lines in Figure 4, main heater coil MC is not energized, and in its non-energized period, utilizes by more than half and less than totally, be the secondary heater coil group induction heating of 1 group that 2 adjacent secondary heater coils are formed in this example.
As clearly known from this Fig. 4, in the multiple intervals formed with predetermined time interval (being only called below in " interval "), in the interval I that this is initial, secondary heater coil SC1, SC2 are for connecting, in the interval II of the next one, secondary heater coil SC1 is off, and SC2 continues to connect.SC3 is for connecting.
In the interval III of the next one, secondary heater coil SC1 continues to disconnect, and SC2 is off.SC3 continues to connect, and SC4 is again for connecting.In the interval IV of the next one, SC3 is off.SC4 continues to connect, and SC1 is again for connecting.Interval I ~ IV shown in this figure can be about 10 ~ 15 seconds as described above.After, the electric current flowing through secondary heater coil SC1 ~ SC4 is switched on the interval of regulation, disconnects in this wise.
(variation of the group of secondary heater coil)
In addition, in this embodiment, in each interval (I, II, III etc.), the structure forming the secondary heater coil of a group creates change, but also can not change and immobilization.Such as also can be divided into the group of SC1, SC2 and the group of SC3, SC4 all the time, 2 groups are alternately energized, to make a group during connecting, another group is off.In addition, in varying situations, also can as shown in Figure 3, from interval I to the IV of above-mentioned energising, during by the 1st group of circulation of heat driven one week, power-up sequence is changed.Such as, the 1st group of interval I as shown in Fig. 3 (B), secondary heater coil SC1, SC2, the combination of interval II is as shown in Fig. 3 (C), SC2, SC4, the combination of interval V again as shown in Fig. 3 (B), when combination for secondary heater coil SC1, SC2, the 1st group by heat driven is moved clockwise successively, but it also can be made around counterclockwise.In this case, also can be that be energized interval I ~ IV and 2 of V ~ VIII circles rotate as shown in Figure 3, and the secondary heater coil of driven object is changed clockwise, on the contrary around counterclockwise from enter into the stage of the 3rd circle from interval IX.Secondary heater coil makes the speed of heating part movement, and the switching interval be namely energized (above-mentioned energising interval I, II, III ~ VIII etc.) also can often repeat a circle and change.Such variation pattern also can be applicable to the 2nd, the 3rd convection current described later and promote to control.
(variation of secondary heater coil)
Also can as shown in Figure 6,4 secondary heater coil SC1 ~ SC4 be made to be 2.That is, the secondary heater coil SCR on the right side shown in Fig. 6 is the coil linking 2 shown in Fig. 1 ~ Fig. 3 secondary heater coil SC1, SC2, and integrally bending becomes the roughly entirety of the right side outer peripheral edges along main heater coil MC.The secondary heater coil SCL in left side becomes the shape of integrally bending, and along the entirety of the left side outer peripheral edges of roughly main heater coil MC, the secondary heater coil in right side and left side becomes the symmetrical shape of central point X1 across main heater coil MC.
The secondary heater coil SCR on right side is identical with the secondary heater coil SCL in left side, jointly uses by means of only arranging with changing direction.In addition the transverse width of 2 secondary heater coil SCR, SCL is about the half of the radius of main heater coil MC, and when the diameter of main heater coil MC is about 180 ~ 200mm, the transverse width of secondary heater coil SCR, SCL is respectively about 45 ~ 50mm.In order to be formed as more elongated shape by improving flatness, there is various technical restriction in the method for winding of assembly line etc.
In this distortion, if (may not be constant interval) alternately at predetermined intervals to the secondary heater coil SCR on right side and the secondary heater coil SC applying high-frequency current in left side from translation circuit respectively, the then edge, periphery, right side of heating object N and the alternately intensively sensed heating of edge, periphery, left side, so alternately produce convection current from left and right among cooked.In this case, also there is following effect, that is, thermal power when thermal power when making the secondary heater coil SCR on the right side under convection current promotion pattern heat separately or the secondary heater coil SCL in left side heat separately than make secondary heater coil SCR, the SCL on right side and left side simultaneously for on-state and heat induced when maximum heat power time, the thermal power of the thermal power of secondary heater coil SCR on right side, the secondary heater coil SCL in left side is large.In addition, the direction of the high-frequency current IA of this main heater coil MC is flow through when being and representing with the direction shown in arrow mark IA and drive main heater coil MC in main heater coil MC.
The main heater coil MC of heat driven at the same time, and when either one or both in the secondary heater coil SCR on right side and the secondary heater coil SCL in left side, flow through the high-frequency current IA of main heater coil MC and respectively flow through the secondary heater coil SCR of left and right, the direction of the high-frequency current IB of SCL is as in figure 6 with as shown in the arrow mark of solid line, from the view point of the efficiency of heating surface, be preferably that identical direction (represents in figure 6 in adjacent side, main heater coil MC is for being rotated clockwise, the secondary heater coil SCR of left and right, SCL is situation about rotating counter-clockwise).This is because, like this at the adjacent area of 2 independently coils, when flowing through electric current to same direction, the magnetic flux produced by this electric current is strengthened each other, increase the magnetic flux density with heating object N interlinkage, more vortex flow is generated in heating object bottom surface, can induction heating expeditiously.
When utilize the secondary heater coil SCR on right side, the secondary heater coil SCL in left side and main heater coil MC this heat a pot simultaneously thermal power be 3KW, in this case, the secondary heater coil SCR on right side is 1KW, the secondary heater coil SCL in left side is also 1KW, when main heater coil MC is also 1KW and heats, under above-mentioned convection current promotion pattern, such as the secondary heater coil SCR on right side is 1.5KW, the secondary heater coil SCL in left side is also 1.5KW, and alternately becomes on-state.In addition, when making secondary heater coil be only two in this wise, the quantity of the translation circuit of driving can be reduced, can expect that the cost brought by the minimizing of circuit structure declines, reduces the advantages such as the miniaturization brought by the area of circuit substrate.
As the variation from Fig. 6 is clearly known, promote to have in control in the 1st convection current: top board, mounting puts into the heating objects such as the pot of cooked, circular main heater coil MC, is configured in the below of above-mentioned top board, 1st secondary heater coil SCR of flat pattern and the 2nd secondary heater coil SCL, is closely configured in the both sides of above-mentioned main heater coil, has the transverse width dimension less than the radius of main heater coil, translation circuit, supplies induction heating electric power respectively to above-mentioned main heater coil MC and the 1st secondary heater coil, the 2nd secondary heater coil SCR, SCL, control part, controls the output of above-mentioned translation circuit, and operating portion, the instruction starting heating and thermal power setting etc. is sent to above-mentioned control part, during above-mentioned control part arranges and does not supply induction heating electric power to above-mentioned 1st secondary heater coil, in this period, induction heating electric power is supplied to above-mentioned 2nd secondary heater coil by above-mentioned translation circuit, arrange during stopping supplying induction heating electric power to above-mentioned 2nd secondary heater coil afterwards, in this period, induction heating electric power is supplied to above-mentioned 1st secondary heater coil by above-mentioned translation circuit, above-mentioned control part is repeatedly to the 1st secondary heater coil, the above-mentioned energising switching action of the 2nd secondary heater coil.
As described above, according to the present embodiment 1, because in the display unit E of display heating condition, selection key E1, E2, E3 of above-mentioned 1st, the 2nd, the 3rd selection portion with by user's selectively actuatable state and be expressed, so the cooking menu as object easily can be selected with forms such as the keys of electrostatic capacity type switch.Because according to this selection, applicable heat driven type is automatically determined by control part, thus can with to pay attention to heating time, pay attention to the user of temperature homogeneity etc. object, wish that the type of drive of corresponding heater coil performs cooking.By display part can be utilized in this wise to operate the options button of cooking menu, there is the mistake can also eliminating user and use, alleviate such advantage such as spiritual burden.
As the application of this variation, when the energising of the secondary heater coil SCR of energising and right side making the main heater coil MC of central part and the secondary heater coil SCL in left side replaces period, other convection path can be produced.The such as initial secondary heater coil SCR15 second driving right side with the thermal power of 1KW, then drive the secondary heater coil SCL15 second in left side with the thermal power of 1KW, after 2 above-mentioned operations repeatedly, only drive main heater coil MC15 second with 1KW.So, can produce and rise directly over main heater coil MC, then in the convection current that the outer peripheral edges side of pot is radially expanded.Thus, the convection current of the path length produced from the heating of the bottom of a pan peripheral part with secondary heater coil SCR, the SCL by left and right matches, form 2 kinds of convection current, mixing effect and the equalizing temperature of the cooked entirety of pot inside can be expected, suppress to boil the effects such as spilling.
(the 2nd convection current promotes to control)
This control is during not driving main heater coil MC, by in secondary heater coil SC1 ~ SC4, the group (also referred to as group) of adjacent multiple above secondary heater coils heats heating object N, but between the group of secondary heater coil, gives the control driving electric power difference.Namely, it is characterized in that, the electric power larger than the induction heating electric power to the 1st group of secondary heater coil group supply is supplied to the 2nd group of secondary heater coil group, then the induction heating electric power to the 1st group of secondary heater coil group supply is reduced, the electric power larger than this electric power is supplied, repeatedly these actions to the 2nd group of secondary heater coil group.In other words, to drive by 4 secondary heater coils, the more than half and mode of the group formed less than total secondary heater coil simultaneously, at remaining secondary heater coil monomer or give between its group and drive electric power poor, make to be greater than remaining secondary heater coil monomer by thermal power summation that the is more than half and group formed less than total secondary heater coil or its thermal power organized operates.
Below specifically describe.
As shown in (B) of Fig. 3, by each translation circuit SIV1, SIV2 simultaneously in 4 secondary heater coil SC1 ~ SC4, adjacent 2 secondary heater coil SC1, SC2 supply high frequency electric currents.In this case, 2 secondary heater coil SC1, SC2 are set respectively to the thermal power (the 2nd thermal power) of each 1.0KW.In this case, 2 secondary heater coil SC1, SC2 and be positioned at 2 secondary heater coil SC4, SC3 of symmetrical position respectively with thermal power 500W(the 1st thermal power across central point X1) driven.
Then, in the same manner as shown in (C) of Fig. 3, thermal power in above-mentioned 2 secondary heater coil SC1, SC2, SC1 is reduced by half, becomes 500W(the 1st thermal power), under the state that SC2 maintains original thermal power, with 1.0KW(the 2nd thermal power) drive the secondary heater coil SC4 adjacent with SC2.SC3 keeps 500W(the 1st thermal power).
Then, in the same manner as shown in (D) of Fig. 3, thermal power in above-mentioned 2 secondary heater coil SC2, SC4, SC2 is reduced by half, becomes 500W, under the state that SC4 maintains original thermal power, drive the secondary heater coil SC3 adjacent with SC4 with 1.0KW.SC1 keeps 500W.
As clearly known by above explanation, it is characterized in that, the group of 2 adjacent secondary heater coils is driven with large thermal power, the group of remaining 2 secondary heater coils is driven with the thermal power less than this large thermal power, and by switching this large thermal power group and little thermal power group, the part forcing heat is changed in position.
According to this control, the central part heating pan etc. can be realized, foreheater surface (side of pot) is so effectively cooking method, heating means on one side.In addition, because centre change around main heater coil MC of being heated by secondary heater coil SC1 ~ SC4 of pot, so particularly when the cooking liquid that the viscosity that heating is thick is high, local also can be suppressed burned.
Like this, the 2nd convection current promotes to control to be the mode that the group of that utilize in 4 secondary heater coil SC1 ~ SC4, adjacent 2 secondary heater coils carries out main heating.In other words, be that drive in 4 secondary heater coils, more than half and less than total secondary heater coil simultaneously, and between the group of one or more secondary heater coils remaining, give the mode driving hot merit rate variance.2nd convection current promotes that controlling not is only realize when 4 secondary heater coil SC1 ~ SC4, such as, when with 6 secondary heater coils, drives 3 or 4 secondary heater coils simultaneously.In addition, preferably the 2nd thermal power is more than 2 times of the 1st thermal power, but also can be more than 1.5 times.In addition, carry out in the mode driven more than 4 secondary heater coils being divided into the 1st of 2 adjacent secondary heater coils the group and another group (the 2nd group), preferably the 2nd thermal power summation of above-mentioned 1st group of secondary heater coil is more than 2 times of the 1st thermal power summation, but also can be more than 1.5 times.
In addition, as the variation of secondary heater coil, as shown in Figure 6, above-mentioned make 4 secondary heater coil SC1 ~ SC4 be the example of 2, but this variation also can be applicable to the 2nd convection current to be promoted to control.That is, have: top board, mounting puts into the heating objects such as the pot of cooked, circular main heater coil MC, is configured in the below of above-mentioned top board, 1st secondary heater coil SCR of flat pattern and the 2nd secondary heater coil SCL, is closely configured in the both sides of this main heater coil, has the transverse width dimension less than the radius of main heater coil, translation circuit, supplies induction heating electric power respectively to main heater coil MC and the 1st secondary heater coil, the 2nd secondary heater coil SCR, SCL, control part, controls the output of this translation circuit, and operating portion, the instruction starting heating and thermal power setting etc. is sent to this control part, above-mentioned control part supplies the electric power larger than the induction heating electric power supplied to above-mentioned 1st secondary heater coil SCR from above-mentioned translation circuit to above-mentioned 2nd secondary heater coil SCL, afterwards, reduce the induction heating electric power supplied to above-mentioned 2nd secondary heater coil SCL, the electric power larger than this electric power is supplied from above-mentioned translation circuit above-mentioned 1st secondary heater coil SCR, above-mentioned control part can pass through repeatedly to the 1st secondary heater coil, 2nd secondary heater coil SCR, the above-mentioned energising switching action of SCL and realizing.
(the 3rd convection current promotes to control)
This control relates to the 3rd technical scheme.While drive main heater coil MC, with during this driving simultaneously or during driving and stopping, by secondary heater coil SC1 ~ SC4 heating heating object N.Namely, it is characterized in that, the both sides of main heater coil will be configured in, the multiple secondary heater coil with the flat pattern of the transverse width less than the radius of main heater coil is divided into the 1st group and the 2nd group, and these groups are configured in respectively the both sides of main heater coil, during supplying induction heating electric power with the 1st thermal power continuously or intermittently to above-mentioned main heater coil, under the state of stopping to the induction heating electric power of above-mentioned 1st group, 2nd thermal power larger than above-mentioned 1st thermal power is supplied to above-mentioned 2nd group from above-mentioned translation circuit, then the induction heating electric power to above-mentioned 1st group is stopped, 3rd thermal power larger than above-mentioned 1st thermal power is supplied to above-mentioned 2nd group from above-mentioned translation circuit, by repeatedly these actions, the cooked in above-mentioned heating object is made to produce the convection current in long path.Thus, even if when convection current does not produce, because the centre of being heated by secondary heater coil SC1 ~ SC4 of pot changes in the outside of main heater coil, so particularly when the cooking liquid that the viscosity that heating is thick is high, local also can be suppressed burned.
Fig. 7 is the figure on the opportunity representing the electric current flowing through main heater coil MC and secondary heater coil SC1 ~ SC4, the on-state of the high-frequency current being applied with heat driven is expressed as " connection ", the off-state of the high-frequency current not being applied with heat driven is expressed as "off".
As in this shown in dashed lines in Figure 7, main heater coil MC is energized continuously at initial interval I ~ IV, but ensuing 4 intervals become non-energized period.In this energising with in non-energized period, by the more than half and group induction heating of secondary heater coil less than total (being 2 in this example embodiment).It is characterized in that, the summation of thermal power during this induction heating is the thermal power larger than the thermal power (the 1st thermal power) of the main heater coil of " during the driving that non-convection promotion controls ".
Here, so-called " during the driving that non-convection promotion controls ", refers to each in 2 kinds of situations that next will disclose.But, when controlling, can not determine the 1st thermal power under the condition meeting 2 kinds of following situation both sides yet, and with the situation of either party setting the 1st thermal power.
(1) drive main heater coil MC and all secondary heater coils, when carrying out playing the such usual running of maximum heating amount and cooking simultaneously.Such as drive main heater coil MC and all secondary heater coils simultaneously, maximum heat power setting is 3KW, the thermal power of the main heater coil that when this 3KW heats, when the thermal power ratio being assigned to main heater coil is 1KW, this 1KW becomes when the driving controlled " non-convection promote ".
(2) when make in the ordinary way main heater coil MC individually heat driven and cook, with maximum thermal power setting operate time.The thermal power of the main heater coil that when such as, maximum heat power in main heater coil MC monomer is 1.2KW, this 1.2KW becomes " during the driving that non-convection promotion controls ".
As clearly seen in Figure 7 as through, throughout all intervals, more than half and by secondary heater coil SC1, SC2, this is formed less than the group (the 1st group) of total secondary heater coil, the 2nd group by SC3, SC4, this is formed.In initial interval I, the 1st group is connection, and the 2nd group is off.In the interval II of the next one, the 1st group is off, and the 2nd group for connecting.
In the interval III of the next one, the 1st group is connection again, and the 2nd group is off.It can be such as about 10 ~ 15 seconds by the interval I ~ IV shown in this figure.After, the electric current flowing through the 1st group and the 2nd group secondary heater coil group is alternately switched on the interval of regulation, disconnects in this wise.
(the 3rd convection current promotes the variation controlled)
Fig. 8 is the figure on the opportunity representing the electric current flowing through main heater coil MC and secondary heater coil SC1 ~ SC4, the on-state of the high-frequency current being applied with heat driven is expressed as " connection ", the off-state of the high-frequency current not being applied with heat driven is expressed as "off".With more than half and formed the group (the 1st group) of secondary heater coil less than total secondary heater coil, by secondary heater coil SC1, SC2, this is formed.On the other hand, the 2nd group by remaining SC3, SC4, this is formed.Being formed in cooking of this group is not changed, the 1st group be fixed to all the time secondary heater coil SC1, SC2 this.
As shown in dotted line in this Fig. 8, main heater coil MC is in initial interval I ~ II (with the first thermal power) energising continuously, but ensuing 4 intervals (III ~ VI) become non-energized period.During (with the 1st thermal power) induction heating of main coil MC in these 2 initial intervals, 4 secondary heater coil SC1 ~ SC4 all drive termination.
When then becoming interval III, the energising of main heater coil MC stops.Replace, when entering this interval III, the 1st group of sensed heating of secondary heater coil.The summation of thermal power during this induction heating is the 1st thermal power (such as 1KW) large (the 2nd) thermal power (such as 1.5KW or 2KW) than above-mentioned main heater coil.The 2nd group of secondary heater coil by heat driven.
When then becoming interval IV, the energising of main heater coil MC keeps stopping, but at this interval IV, the 1st group of secondary heater coil is stopped heating.Replace, the 2nd group of secondary heater coil SC3, SC4 are by heat driven.The summation of thermal power during this induction heating is the 1st thermal power (1KW) large (the 3rd) thermal power (such as 1.5KW or 2KW) than above-mentioned main heater coil.In addition, the 3rd thermal power and the 2nd thermal power are identical thermal powers, but as long as larger than the 1st thermal power (1KW), also can not be identical.
When then becoming interval V, the energising of main heater coil MC keeps stopping, but at this interval V, the 1st group of secondary heater coil again by heat driven.The summation of the driving thermal power of 2 in this situation secondary heater coil SC1, SC2 is above-mentioned 2nd thermal powers (such as 1.5KW or 2KW) larger than the 1st thermal power.At this interval V, the 2nd group of secondary heater coil SC3, SC4 are stopped heating.
When then becoming interval VI, the energising of main heater coil MC keeps stopping, but at this interval VI, the 1st group of secondary heater coil is again heated termination, replace, and the 2nd group by heat driven.The summation of the driving thermal power of 2 secondary heater coil SC3, SC4 of the 2nd group in this situation is 3rd thermal powers larger than the 1st thermal power.
When then becoming interval VII, the energising of main heater coil MC is resumed.Thermal power is now the 1st thermal power.In addition, at this interval VII, the 1st group of secondary heater coil again by heat driven, the summation of the driving thermal power of 2 secondary heater coil SC1, SC2 of the 1st group in this situation is 2nd thermal powers larger than the 1st thermal power.2nd group of heating stops.
When then becoming interval VIII, the energising of main heater coil MC is maintained by the 1st thermal power, but SC1, SC2 of the 1st of secondary heater coil the group are stopped heating.Replace, the 2nd group of secondary heater coil again by heat driven, the heating level in this situation is the 3rd thermal power.
As described above, main heater coil MC, is stopped 4 interval heating by heat driven in 2 intervals.Repeat above-mentioned action later.On the other hand, the 1st, the 2nd group of secondary heater coil is after 4 interval heating stop, every an interval alternately by type that heat driven is such.In addition, interval I mark (A) of Fig. 8, interval III mark (B), interval IV mark (C), at the Reference numeral that interval VII mark (D) is such, should (A), (B), (C), (A), (B), (C) of interval and Fig. 9 of (D), (D) corresponding, be understood to the state that driving switches period in fig .9 successively.So, the type that is energized adds up to 5 kinds.
In addition, on the switching preferred opportunity of energising, namely each interval (I ~ IX etc.) are not both different according to cooked, but at least after the temperature boiling of cooked, or from before at a simmer close to beginning the state of 100 DEG C, such as switch with 10 ~ 15 seconds intervals later.Or, when setting 30 minutes endure stew the cooking, also can start before 5 before end of cooking minute until the enforcements in 5 minutes that terminate.
Even if in fact with the 1st, the 2nd thermal power heat driven main heater coil MC and secondary heater coil, by the 1st, the 2nd, the 3rd thermal power difference, the 1st, 2, the intensity of convection current that produces of each absolute value of the 3 thermal powers viscosity that is also subject to the liquid of cooked affects significantly, so preferably select thermal power value, energization interval according to the experimental result of the various cooking, order etc.
Below, be described with concrete example when being applicable to actual cooking menu.
Illustrative examples is as carried out the situation of the cooking menu of " scald and boil " with 2.0KW.
At first, even if do not input 2.0KW at first in not shown thermal power configuration part, default value described above is also 2.0KW, so from from the beginning of to heat 2.0KW.In this case, major-minor thermal power automatically can be determined by circuit for controlling electricity turning 200 than also, user does not at random set, such as the thermal power of main heater coil MC is set to 800W, the total thermal power in 4 secondary heater coils is set to (larger than above-mentioned " the first thermal power ") 1200W.
Then, heat with 2.0KW, (temperature sensor is utilized in water boiling, control part is fluidized state according to the information inference such as temperature, the change of temperature rising degree of heating object N) time, circuit for controlling electricity turning 200 sends notification signal, utilize the display unit G of the operation condition of display heater block to show with word, light display, this situation is notified user.Now, when again not setting thermal power, notification automatically reduces the situation of thermal power.
When user does not carry out any operation, when becoming fluidized state, circuit for controlling electricity turning 200 exports the command signal reducing thermal power to main translation circuit MIV and subcommutation circuit SIV1 ~ SIV4, such as the thermal power of main heater coil MC is set to 300W, and the total thermal power of 4 secondary heater coils is set to 300W.
The longest continuation of this state 30 minutes, if do not carrying out any operation during this period, then all induction heating sources are automatically driving stopping.Until the operation of this boiling, main heater coil MC and secondary heater coil SC1 ~ SC4 is controlled so as to, consistent in the direction of the high-frequency current in adjacent region.
On the other hand, after boiling, user sets thermal power again, the 3rd convection current promotes to control automatically to be implemented.
Such as, it not default value (600W) after boiling, when thermal power is brought up to 2.0KW by user, the thermal power (the 1st thermal power) of main heater coil MC is set as 500W(the 1st thermal power by circuit for controlling electricity turning 200), the total thermal power of adjacent each other two secondary heater coils is set as 1.5KW, and the total thermal power (the 3rd thermal power) of the group of another secondary heater coil is set as 1.5KW.
During with the main heater coil MC of 500W Continuous Drive, adjacent 4 secondary heater coils are such as divided into this group of 2 of SC1, SC2 and this group of 2 of SC3, SC4, respectively to add up to 1.5KW alternately heat driven each 15 seconds of above-mentioned 2 groups (a secondary heater coil drops into the thermal power of 750W).
In addition, user is after just seething with excitement, thermal power is not 2KW, but when bringing up to the 3.0KW as maximum heat power, the thermal power (the 1st thermal power) of main heater coil MC is set as 1.0KW(the 1st thermal power by circuit for controlling electricity turning 200), the total thermal power of adjacent each other two secondary heater coils is set as 2.0KW, and the total thermal power (the 3rd thermal power) of the group of another secondary heater coil is set as 2.0KW.
Until above-mentioned boiling operation, main heater coil MC and secondary heater coil SC1 ~ SC4 is controlled so as to, consistent in the direction of the high-frequency current in adjacent region, export strong thermal power, but the direction of boiling after-current is switched on the contrary, such as at the adjacent area of main heater coil MC and secondary heater coil SC1 and the adjacent area of main heater coil MC and secondary heater coil SC2, high-frequency current flows with becoming rightabout.
In addition, in the above description, when making thermal power be 2KW after boiling, be the mode driving main heater coil MC with 500W off and on, but also can drive continuously.No matter any mode is all utilize 2 at least adjacent secondary heater coils to produce more convection current.That is, because as far as possible near the position of the circumference of heating object N, by the secondary heater coil flock-mate alternately induction heating of 2 groups, so lighten at edge, the periphery proportion of cooked, produce the flowing of naturally rising among cooked.In addition, the present invention is at all not limited to the example of the thermal power of main heater coil MC as described above and the total thermal power of secondary heater coil side.
In addition, in order to improve convection current facilitation effect, preferably make to the edge, periphery of heating object N to add ratio of specific heat central part strong, even if so hypothesis is 1.5KW making above-mentioned main heater coil MC as the 1st thermal power, when making the adjacent multiple secondary heater coil among secondary heater coil SC1 ~ SC4 add up to (as the 2nd thermal power) for 1.5KW, because control the current on time of main heater coil MC all the time, if when the current on time of the time such as making boiling later is 50%, then become the thermal power that essence is equivalent to 750W, even so such situation, also convection current facilitation effect of the present invention can be obtained.
" if having time optionally " energising switching controls of secondary heater coil SC1 ~ SC4 as shown in Figure 3 also can suppress the spilling of boiling of carrying out boiling, scalding when boiling.Namely, "+holding mode of heating up water " is such described above, with in firing rate and the preferential cooking menu of uniformity, become after boiling scald the stage of boiling time, as long as the energising switching controls of secondary heater coil SC1 ~ SC4 as shown in Figure 3 can be carried out, the central authorities of only pot and specific one position just can being avoided by heating such state strongly, becoming and making induction heating portion move such mode successively relative to the bottom of pot.
At the secondary heater coil portion heating kettle of energising, on the other hand, in the bottom of a pan of secondary heater coil part of non-power status being positioned at separated position, do not heat, but transmit in pot from the heat of heating part, become the mode be preheated, the effect making the cooked entirety of heat equably throughout pot inside can be expected thus.Here, the meaning that " if having time optionally " is such, has more than and refers to certain cycle (such as every 30 seconds).Also there is the following meaning, that is, initial and next switching cycle also can be made among identical cooking menu to change, or change cycle and number of repetition according to the kind of cooking menu and cooked.
Like this, the 3rd convection current promotes that control utilizes main heating coils heat central part, while utilize the mode in the group heated periphery portion of 2 in 4 secondary heater coil SC1 ~ SC4, adjacent secondary heater coils.In other words, be that drive in 4 secondary heater coils, more than half and less than total secondary heater coil simultaneously, and between the group of one or more secondary heater coils remaining, give the mode driving hot merit rate variance.2nd convection current promotes to control not to be only realize when 4 secondary heater coil SC1 ~ SC4, such as, when use 6 secondary heater coils, as long as drive 3 or 4 secondary heater coils simultaneously.
(variation of the group of secondary heater coil)
In addition, in this embodiment, in all intervals (I, II, III etc.), the fixing secondary heater coil forming the group of secondary heater coil, is divided into the group of SC1, SC2 and the group of SC3, SC4, but this packet mode also can be made to change with specific time interval.Such as shown in Figure 4, this packet mode also can be made in the change of each interval.
In addition, as the variation of secondary heater coil, in the 1st convection current promotes to control, illustrate the example (with reference to Fig. 6) 4 secondary heater coil SC1 ~ SC4 being merged into 2, this variation also can be applicable to the 3rd convection current and promote to control.
That is, the 3rd convection current when employing the 1st secondary heater coil, the 2nd secondary heater coil SCR, SCL promotes that control has: the heating object N such as pot, puts into for cooked, top board, loads this heating object, circular main heater coil MC, is configured in the below of this top board, 1st secondary heater coil SCR of flat pattern and the 2nd secondary heater coil SCL, is closely configured in the side of this main heater coil respectively, has the transverse width dimension less than the radius of main heater coil, translation circuit, supplies induction heating electric power respectively to main heater coil MC and above-mentioned 1st secondary heater coil, the 2nd secondary heater coil SCR, SCL, control part, controls the output of above-mentioned translation circuit, and operating portion, the instruction starting heating and thermal power setting etc. is sent to above-mentioned control part, above-mentioned control part is during making above-mentioned main heater coil MC supply induction heating electric power with the 1st thermal power (such as 800W), induction heating electric power is supplied from above-mentioned translation circuit to above-mentioned 1st secondary heater coil SCR with the 2nd thermal power (such as 1.2KW) larger than above-mentioned 1st thermal power, afterwards, stop the induction heating electric power to above-mentioned 1st secondary heater coil SCR, induction heating electric power is supplied from above-mentioned translation circuit to above-mentioned 2nd secondary heater coil SCL with the 3rd thermal power (such as 1.2KW) larger than above-mentioned 1st thermal power, above-mentioned control part can pass through repeatedly to the 1st secondary heater coil, 2nd secondary heater coil SCR, the above-mentioned energising switching action of SCL and realizing.
In addition, in this case, in during main heater coil MC and the secondary heater coil SCR on right side or the secondary heater coil SCL in left side is simultaneously by heat driven, the direction of the high-frequency current IB of the high-frequency current IA flowing through main heater coil MC and secondary heater coil SCR, SCL of respectively flowing through left and right is as in figure 6 with as shown in the arrow mark of solid line, preferably become identical direction in adjacent side from the viewpoint of the efficiency of heating surface, this situation is above-mentioned.Thus, under convection current promotion pattern, electric current is flow through at the adjacent area of 2 independently coils to same direction like this if be controlled to, the magnetic flux that then this electric current produces is strengthened each other, increase the magnetic flux density with heating object N interlinkage, more vortex flow is generated in heating object bottom surface, can induction heating expeditiously, so the heating for generation of convection current effectively can be carried out.
Execution mode 2
Represent to exploded that to be the figure of the induction heating cooking instrument representing embodiments of the present invention 2, Figure 10 be in Figure 10 ~ 36 stereogram of the built in type induction heating cooking instrument entirety of embodiments of the present invention 2.
The stereogram of the body entirety under the state that Figure 11 is the ceiling plate portion representing the built in type induction heating cooking instrument having unloaded embodiments of the present invention 2.
Figure 12 is the vertical view of the body entirety of the built in type induction heating cooking instrument of embodiments of the present invention 2.
Figure 13 is the stereogram of the state of the main member of formation such as dividing plate between the upper and lower of the built in type induction heating cooking instrument having unloaded embodiments of the present invention 2.
Figure 14 is the D1-D1 longitudinal section of Figure 10.
Figure 15 is the D2-D2 longitudinal section of Figure 10.
Figure 16 is represent the component shell of the built in type induction heating cooking instrument of embodiments of the present invention 2 and a part for cooling pipe main portion stereogram with cutting off.
Figure 17 is the vertical view of the configured in one piece of the heater coil of the built in type induction heating cooking instrument representing embodiments of the present invention 2.
Figure 18 is the vertical view in the induction heating source in the left side of the built in type induction heating cooking instrument representing embodiments of the present invention 2.
Figure 19 is the wiring instruction figure of the main heater coil in the induction heating source in the left side of the built in type induction heating cooking instrument of embodiments of the present invention 2.
Figure 20 is the main heater coil in the induction heating source in the left side of the built in type induction heating cooking instrument of embodiments of the present invention 2 and the amplification plan view of peripheral part thereof.
Figure 21 is the vertical view of the main heater coil coil supports body in the induction heating source in the left side of the built in type induction heating cooking instrument of embodiments of the present invention 2.
Figure 22 is the control circuit overall diagram of the built in type induction heating cooking instrument of embodiments of the present invention 2.
Figure 23 is the full-bridge mode circuit diagram in the main portion of control circuit of the built in type induction heating cooking instrument becoming embodiments of the present invention 2.
Figure 24 is the schematic drawing of the full-bridge mode circuit in the main portion of control circuit of the built in type induction heating cooking instrument becoming embodiments of the present invention 2.
Figure 25 loads large footpath pot and longitudinal section under adding thermally operated situation above the induction heating source, left side of the built in type induction heating cooking instrument of embodiments of the present invention 2.
Figure 26 is the longitudinal section of the central front part of the body of the built in type induction heating cooking instrument representing embodiments of the present invention 2.
Figure 27 is the vertical view of the synthetic display parts of the built in type induction heating cooking instrument representing embodiments of the present invention 2.
The vertical view of the display frame example of synthetic display parts when Figure 28 is the left IH heating source representing the built in type induction heating cooking instrument only using embodiments of the present invention 2.
The vertical view of the display frame example of synthetic display parts when Figure 29 is the left IH heating source representing the built in type induction heating cooking instrument only using embodiments of the present invention 2.
Figure 30 is the vertical view representing the display frame example of being carried out the synthetic display parts when cooking is heated at a high speed by the left IH heating source of the built in type induction heating cooking instrument of embodiments of the present invention 2.
Figure 31 be the built in type induction heating cooking instrument entirety representing embodiments of the present invention 2 substantially add thermally operated rate-determining steps key diagram.
Figure 32 is the flow chart 1 of the control action of the built in type induction heating cooking instrument of embodiments of the present invention 2.
Figure 33 is the flow chart 2 of the control action of the built in type induction heating cooking instrument of embodiments of the present invention 2.
The flow chart 3 of control action when Figure 34 is the thermal power change of the built in type induction heating cooking instrument representing embodiments of the present invention 2.
Figure 35 represents in the built in type induction heating cooking instrument of embodiments of the present invention 2, the figure of the value of main heater coil MC when thermal power is 3KW and 1.5KW and the thermal power value (h eating power) of secondary heater coil SC1 ~ 4.
Figure 36 represents in the built in type induction heating cooking instrument of embodiments of the present invention 2, the figure of the value of main heater coil MC when thermal power is 500W and the thermal power value (h eating power) of secondary heater coil SC1 ~ 4.
In addition, identical Reference numeral is marked to the same or equivalent part of structure of above-mentioned execution mode 1.
In addition, as long as no specializing, term used in execution mode 1 also uses with the identical meaning in present embodiment 2.
(heating device body)
The heating device of this execution mode 2 also comprises: the body A of 1 rectangle; Ceiling plate portion B, forms the upper surface of body A; Housing section C, the surrounding's (exterior contour) beyond the upper surface of formation body A; Heater block D, utilizes heating kettle, the food etc. such as electric energy; Functional unit E, is operated by user; Control assembly F, accepts the signal from functional unit and controls heater block; And display unit G, the operation condition of display heater block.In addition, as a part of heater block D, as described below, the electric heating element being called as grid storehouse (grid heating chamber) or roaster is comprised.
The feature of the induction heating cooking instrument of this execution mode 2 is, main heater coil MC since utilizing in the past heats the pot etc. of common size, by the circular pot more much bigger than the diameter of common pot, when rectangular large shape pot (also referred to as large footpath pot) etc. is placed in induction heating portion, collaborative heating is carried out by (being located at the multiple of the surrounding of main heater coil MC) the secondary heater coil SC1 ~ SC4 of the position close to this arrangement and the cooperation of main heater coil, in order to determine to perform the secondary heater coil SC in such collaborative heating action, the outer fix of heater coil SC secondary with this is only made to be positioned at the separate radiation portion luminescence of the below of top board accordingly, light.
In addition, the below being configured at top board with the illuminating part on a large scale showing this border of heating region on a large scale around the mode of heating part on a large scale and above-mentioned execution mode 1 are had larger different, this can realize the collaborative heating of main heater coil MC and all secondary heater coil SC1 ~ SC4 in heating part on a large scale.
(body A)
Body A as shown in Figure 10, upper surface is covered overall by ceiling plate portion B described later, the outer shape of this body A is to cover the size arranging mouthful K1, and the size of the regulation matched with space, be formed as roughly square or rectangular, this arranges a mouthful K1 and is formed at the kitchen utensils KT(such as tank with reference to Figure 15).
Body housing 2 shown in Figure 11 forms the exterior contour face of this housing section C, is made up of the anterior lip plate 2B of metastomium 2A and metallic plate, and this metastomium 2A is formed by utilizing drawing machinery to carry out repeatedly Bending Processing to 1 flat metallic plate; This anterior lip plate 2B is bonded on the end of this metastomium by welding or the fixed part such as rivet, screw, under the state utilizing fixed part to make above-mentioned anterior lip plate 2B and metastomium 2A combine, becomes the box-shaped of upper surface open.The back part bottom of the metastomium 2A of this box-shaped is rake 2S, is vertical back face wall 2U above it.
Three positions of the rearward end of the upper surface open of the body housing 2 shown in Figure 11, right part and left part, there is flange respectively that formed to one bending in L-shaped laterally, the flange 3R on the flange 3B at rear, the flange 3L in left side, right side and anterior lip plate 2B is placed in the setting unit of kitchen utensils KT (with reference to Figure 15) upper surface, the load of supporting heating device.
And, as shown in figure 15, heating device by be fully contained in kitchen utensils KT the state that mouthful K1 is set under, the front face of heating device exposes from the peristome KTK in the front being formed at kitchen utensils KT, can operate (left and right) operating portion 60(reference Figure 10 before heating device from kitchen utensils KT front face side).
Rake 2S links the back side and the bottom surface (with reference to Figure 11, Figure 13) of metastomium 2A, when heating device is arranged at kitchen utensils KT with embedding, in order to prevent colliding with mouthful K1 hinder marginal part that arranges of kitchen utensils KT or interfere and cut.That is, when this heating device is arranged at kitchen utensils KT with embedding, tiltedly down, what first fall into kitchen utensils KT in this condition from nearby side arranges a mouthful K1 in the nearby inclination of the body A of heating device.Afterwards, make rear side fall in the mode of drawing arc to arrange the such method to set up of mouthful K1(and be such as recorded in Japanese Unexamined Patent Publication 11-121155 publication in detail).In order to such method to set up, anterior lip plate 2B becomes following size, that is, when heating device being arranged at kitchen utensils KT, guarantee sufficient space S P the arranging between a mouthful exterior region (with reference to Figure 15) of mouthful K1 that arrange of kitchen utensils KT.
Comprise in the inside of body housing 2: heating source 6L, 6R, be placed in below the heating object N(such as the tool pot that is magnetic, that be such as made up of metal of top board 21 described later for induction heating and be sometimes only called pot); Electric heater, such as, be called as the radiant type central authorities electrical-heating source 7 of radiant heater, utilize radiant heat to heat; Control assembly F described later, controls the cooking conditions of this heater block; Functional unit E described later, inputs above-mentioned cooking conditions to this control assembly; And display unit G, show the operation condition of the heater block inputted by this functional unit.Below, explain respectively.
In addition, preferably in 2, as the pot of heating object N, assuming that use the pot that diameter is more than 12cm, as pot (monaural pot, Double-lug pot etc.), diameter is 16cm, 18cm, 20cm, 24cm, as pan, diameter is 20cm, arched as sky bran, diameter is 22cm, as Chinese frying pan, diameter is 29cm, can use the various pots such as above-mentioned pot.
The inside of housing section C as shown in figure 11, be divided substantially be formed as longer stretching, extension along the longitudinal direction right side cooling chamber 8R, the left side cooling chamber 8L of longer stretching, extension along the longitudinal direction in the same manner, grid (or roaster) heating chamber 9 of box-shaped, upper component room 10, rear part exhaust room 12, but each room is not mutually fully isolated.Such as right side cooling chamber 8R and left side cooling chamber 8L, is communicated with rear part exhaust room 12 via upper component room 10 respectively.
Under the state that grid heating chamber 9 is closed by door 13 described later in its front openings 9A portion, become roughly independently confined space, but via discharge duct 14, be communicated with the interior space of the space outerpace of housing section C, i.e. kitchen etc. (with reference to Figure 15).
(ceiling plate portion B)
Ceiling plate portion B as described below, is made up of upper frame (also referred to as frame body) 20 and top board (also referred to as upper plate, glass roof, cover plate) 21 these 2 large components.Upper frame 20 entirety is formed as picture frame shape by metal making sheet such as non-magnetic stainless steel plate or aluminium sheets, has the such size of the upper surface open of blocking body housing 2 (with reference to Figure 12, Figure 15).
Top board 21 has seamlessly to cover completely is located at the such transverse width dimension W(of the large peristome of the central authorities of the upper frame 20 of picture frame shape with reference to Figure 17), be arranged on above body housing 2 with overlapping.This top board 21 entirety is made up of through infrared ray with from the transparent or semitransparent material of the luminous ray of LED resistance to thermal reinforced glass, sintered glass ceramics etc., with the mating shapes of the peristome of upper frame 20 be formed as rectangle or square.In addition, when transparent, because user is visible whole on-board components from the top of top board 21, sometimes damage attractive in appearance, so sometimes on the surface of top board 21, the back side implements the application of covering, or implemented tiny mottled or grid-like not through the part of luminous ray by printing etc.
And the lateral margin all around of top board 21 is sandwiched rubber filler, seal (not shown) and being fixed in watertight state between the peristome of upper frame 20.Thus, prevent water droplet etc. from entering the inside of body A by being formed at upper frame 20 and the gap of the part in opposite directions of top board 21 from the upper surface of top board 21.
In Fig. 10, right ventilating opening 20B is formed by press is simultaneously die-cut when forming upper frame 20, becomes the air suction way of forced draft fan 30 described later.Central ventilated mouth 20C is the die-cut formation when forming upper frame 20 in the same manner, and left ventilating opening 20D is the die-cut formation when forming upper frame 20 in the same manner.In addition, only represent the rear portion of upper frame 20 in fig. 8, but as Figure 12 from top view, cover the upper surface entirety of body housing 2 in picture frame shape.
Top board 21 in the stage of the cooking of reality, sometimes accept from by after induction heating source, right side (hereinafter referred to as " right IH the heating source ") 6R, induction heating source, left side (hereinafter referred to as " left IH heating source ") the 6L induction heating the heat becoming the heating object N such as the pot of high temperature also becomes more than 300 degree that explain.And, when the below of top board 21 is provided with the radiant type as radioactive electrothermal heater described later central authorities electrical-heating source 7, utilize the heat from this radiant type central authorities electrical-heating source 7, top board 21 is themselves directly heated to high temperature, and this temperature also reaches more than 350 degree sometimes.
At the upper surface of top board 21, as shown in fig. 10 and fig. 12, represent that leader label 6RM, 6LM, 7M of the circle of the approximate location of right IH heating source 6R described later, left IH heating source 6L, radiant type central authorities electrical-heating source 7 represent respectively by the method for printing etc.The diameter of left and right leader label 6RM, 6LM is 220mm respectively.
(heater block D)
As the heater block D of embodiments of the present invention 2, the 1 right radiant type electrical-heating source 22,23 up and down of comprise the right IH heating source 6R of the upper right position being positioned at body A, be positioned at the left IH heating source 6L in left side on the contrary, be positioned on the left and right center line of body A the radiant type central authorities' electrical-heating source 7 near rear portion and the inside roaster at grid heating chamber 9.These heating sources are configured to, by control assembly F control independently of each other energising, but details rear with reference to accompanying drawing while explanation.
(right IH heating source)
It is inner that right IH heating source 6R is arranged on the above-mentioned upper component room 10 being divided the inside being formed at body housing 2.Further, right IH heater coil 6RC is configured with in the lower face side on the right side of above-mentioned top board 21.The upper end of this coil 6RC and the lower surface of top board 21 with being separated with minim gap close, become IH(induction) heating source.In this embodiment, such as use possesses the heating source that maximum consumption electric power (maximum heat power) is the ability of 3kW.Right IH heater coil 6RC is by being bundled into wire harness in the shape of a spiral by the fine rule of about the 0.1mm ~ 0.3mm of about 30, and twist while reel 1 or many these wire harness (hereinafter referred to as assembly line), as shown in figure 17, using central point X2 as basic point, outer shape becomes circular mode, is finally configured as disc.The diameter (maximum outside diameter size) of right IH heater coil 6RC is roughly about 180mm ~ 200mm.
Also can make as the position of the leader label 6RM of the circle being shown in top board 21 (representing with solid line in Fig. 10) fully consistent with the most peripheral position of the right IH heater coil 6RC of right IH heating source 6R, but for enforcement the present invention, completely the same dispensable condition.Because the diameter of above-mentioned left and right leader label 6RM, 6LM is 220mm, so when the diameter (maximum outside diameter size) of right IH heater coil 6RC is 200mm, apart from the position becoming right leader label 6RM directly over the most peripheral edge of right IH heater coil 6RC is respectively outside 10mm.This leader label 6RM only represents the mark in suitable induction heating region.The circle of the dotted line on right side represents the most peripheral position of right IH heater coil 6RC substantially in Fig. 10.
(left IH heating source)
Left IH heating source 6L across the left and right centre line C L 1(of body A with reference to Figure 17) be arranged at the position (centered by left and right centre line C L 2) with right IH heating source 6R substantial line symmetry, become the structure same with right IH heating source 6R.In this embodiment, such as use possesses the heating source that maximum consumption electric power (maximum heat power) is the ability of 3kW.In addition, as shown in figure 18, by using central point X1 as basic point, radius is that 2 coils with the outer shape of the ring-types of heart shaped configuration of R1 are formed to left IH heater coil 6LC, its diameter (maximum outside diameter size) is about 180mm, but this is the size not comprising secondary heater coil SC described later.In addition, the size of about 180mm forms maximum outside diameter size in the outer coil 6LC1 described later of left IH heater coil and inner coil 6LC2, this outer coil 6LC1.Be equivalent to DA in fig. 17.In order to represent the difference with secondary coil SC described later, below both outer coil 6LC1 of the left IH heater coil 6LC of formation and inner coil 6LC2 are called " main heater coil MC " (with reference to Figure 20).
Also the position as the leader label 6LM of the circle being shown in top board 21 (representing with solid line in Figure 10 with Figure 12) can be made fully consistent with the most peripheral position of left IH heater coil 6LC, but for enforcement the present invention, completely the same dispensable condition.Leader label is the mark representing suitable induction heating region.The circle of the dotted line in the left side of Figure 12 represents the most peripheral position of left IH heater coil 6LC substantially.
The leader label EM being shown in the circle of top board 21 represents that all secondary heater coil SC(comprising main heater coil MC described later and be configured in its all around position at substantially equal intervals add up to 4) the region (hereinafter referred to as " collaborative heating region mark ") of large circle.In addition, position and preferred heating object when representing that for radiating light under above-mentioned top board 21 above-mentioned main heater coil MC and secondary heater coil SC works in coordination with heating of this collaborative heating region mark EM position that loads the outside boundary at position, described later " on a large scale illuminating part " is unanimous on the whole.
Same with right IH heater coil 6RC, be provided with detector unit (hereinafter referred to as the infrared ray sensor) 31L(of infrared-type at the inner space of left IH heater coil 6LC with reference to Figure 18, Figure 22, Figure 23).These details after explain.
The IH heater coil 6LC of above-mentioned left IH heating source 6 is formed by along divided 2 coils of radial direction (below the coil in outside is called " outer coil " 6LC1, the coil of inner side is called " inner coil " 6LC2).These 2 coils as shown in figure 19, are a series of coils be connected in series.In addition, also can not be formed as 2 coils, and entirety is single coil.
At the lower surface (back side) of left and right IH heater coil 6LC, 6RC, as shown in Figure 21, Figure 26, the flux leakage as these heater coils prevents material 73, is configured with the rod that the cross section that formed by high magnetic-permeable material, such as ferrite is square.Such as left IH heater coil 6LC, be configured with 4,6 or 8 (may not be even number root) radially from its central point X1.
Namely, flux leakage prevents material 73 overall without the need to the lower surface covering left and right IH heater coil 6LC, 6RC, as long as by cross section be such as square or rectangular etc. and be configured as bar-shaped flux leakage to prevent material 73 from arranging multiple at predetermined intervals in the mode of intersecting with the winding wire of right IH heater coil 6RC.Thus, preferably in 2, arrange multiple radially from the central point X1 of left side IH heater coil.Utilize such flux leakage to prevent material 73, the heating object N concentrated on from the magnetic line of force of IH heater coil generation top board 21 can be made.
Above-mentioned right IH heater coil 6RC and left IH heater coil 6LC also can be divided into multiple part, makes to be energized independently.Also can be such as, spirally reel in inner side IH heater coil, at the outer circumferential side of this IH heater coil, on concentric circle and roughly same plane is settled the IH heater coil reeled in the shape of a spiral in other large footpath, is energized with the IH heater coil of inner side, 3 energising types heating heating object N that the IH heater coil energising in outside and the IH heater coil of inner side and outer side are all energized such.
Like this, also can utilize in the output level of the High frequency power flowing through 2 IH heater coils, duty ratio, output time interval at least one or combine them, heating object (pot) N(heating shape (large footpath size) from small-sized to large expeditiously, as the representative of technical literature employing so multiple heater coils that can independently be energized, there are known to Japan Patent No. 2978069 publication).
Detector unit 31R is the detector unit of the infrared-type of the interior volume being arranged at the central portion being located at right IH heater coil 6RC, makes to be positioned at the lower surface (with reference to Figure 25) of infrared ray light accepting part towards top board 5 of upper end.
In addition, similarly, be located at the interior volume of central portion of left IH heater coil 6LC, be provided with the detector unit 31L(of infrared-type with reference to Figure 18, Figure 26), after explain.
Detector unit 31R, 31L(of infrared-type are hereinafter referred to as infrared ray sensor) by passing through to detect from ultrared amounts of heating object N radiation such as pots, the photodiode etc. of measuring tempeature is formed.In addition, said temperature detecting element 31R(due to detector unit 31L also identical, so when following both sides share, only with detector unit 31R for representative is described) also can be the detecting element of heat-conducting, such as thermistor temperature sensor.
Utilize infrared ray sensor promptly to detect the ultrared technical scheme corresponding with temperature that is this heating object that be that send from heating object from the below of top board 5 in this wise, such as, pass through Japanese Unexamined Patent Publication 2004-953144 publication (Japan Patent No. 3975865 publication), Japanese Unexamined Patent Publication 2006-310115 publication, Japanese Unexamined Patent Publication 2007-18787 publication etc. are well-known by public affairs.
When detector unit 31R is infrared ray sensor, due to by making the infrared ray radiated from heating object N concentrate and (almost not free poor) receiving in real time and can according to its infrared ray amount detected temperatures, so (than thermistor-type) is excellent.Even if be positioned at the heat resistant glass nearby of heating object N, top board 21 such as pottery system etc. temperature not identical with the temperature of heating object N, no matter and the temperature of top board 21, this temperature sensor also can detect the temperature of heating object N.That is, this is because top board 2 is designed to prevent the infrared ray radiated from heating object N from being absorbed by top board 21 or interdicting.
Such as top board 21 select to make the infrared ray of the wavelength region may of less than 4.0 μm or 2.5 μm through material, on the other hand, the ultrared transducer of wavelength region may of temperature sensor 31R selection detection less than 4.0 μm or 2.5 μm.
On the other hand, when detector unit 31R is the transducer of the heat-conductings such as thermistor, compared with above-mentioned infrared-type temperature sensor, to catch in real time, violent variations in temperature this respect is poor, but the radiant heat that can accept from top board 21, heating object N, reliably detect be positioned at heating object N bottom, top board 21 immediately below it temperature.Even when there is no heating object N, the temperature of top board 21 also can be detected.
In addition, when detector unit is the heat-conducting of thermistor etc., also directly can contact with the lower surface of top board 21 by making its temperature sensing portion, or the component that sandwiched thermally conductive resin etc. is such, hold the temperature of top board 21 self as far as possible exactly.This is because if having space between temperature sensing portion and the lower surface of top board 21, then the conduction of temperature can be delayed.
In the following description, for the component that left and right configures jointly, to total content, sometimes omit the record of " left and right " in title and " L, the R " in Reference numeral.
(radiant type central authorities electrical-heating source)
Radiant type central authorities electrical-heating source 7(is with reference to Figure 10, Figure 12) be configured in the inside of body A and (with reference to Figure 17) and the position at rear portion near top board 21 in the left and right centre line C L 1 of top board 21.Radiant type central authorities electrical-heating source 7 uses and utilizes radiation and the electric heater (such as nichrome wire, halogen heater, radiant heater) of type that heats, through top board 21 from its below the heating object N such as heating kettle.Further, such as use possesses the electrical-heating source that maximum consumption electric power (maximum heat power) is the ability of 1.2kW.
Radiant type central authorities electrical-heating source 7 has the bulge shape of whole upper surface open, and the maximum outside diameter size forming the container-like cover 50 of the heat-insulating material of its most peripheral part is about 180mm, and highly (thickness) is 15mm.
The position of leader label 7M as the circle (representing with solid line in Figure 10 with Figure 12) being shown in top board 21 is not fully consistent with the most peripheral position of radiant type central authorities electrical-heating sources 7.This leader label 7M only represents the mark of suitable heating region.The leader label 7M represented with the circle of dotted line in fig. 12 represents the most peripheral position of the container-like cover 50 of radiant type central authorities electrical-heating source 7 substantially.
(radiant type electrical-heating source)
The 24R of the dividing plate between the upper and lower vertical ground on right side is arranged (with reference to Figure 11, Figure 13), plays the effect completely cutting off the spaced walls between right side cooling chamber 8R and grid heating chamber 9 in the inside of housing section C.The 24L of dividing plate between the upper and lower in left side is arranged (with reference to Figure 11) on vertical ground in the same manner, plays the effect completely cutting off the spaced walls between left side cooling chamber 8L and grid heating chamber the 9th in the inside of housing section C.In addition, the outer side surface of dividing plate 24R, 24L and grid heating chamber 9 keeps the compartment of terrain of a few about mm to be set up between the upper and lower.
Horizontal interval plate 25(is with reference to Figure 11, Figure 14) have the overall size being divided into upper and lower 2 spaces between dividing plate between the upper and lower 24L, 24R of left and right, the top of this space bar 25 is above-mentioned upper component rooms 10.In addition, this horizontal interval plate 25 and the end face of grid heating chamber 9 keep the space 116(of the regulation of a few about mm ~ 10mm with reference to Figure 15) be set up.
Notch part 24A is formed at dividing plate between the upper and lower 24L, 24R of left and right respectively, is set up (with reference to Figure 11) to prevent this cooling pipe 42 when flatly being arranged by cooling pipe 42 described later from colliding with dividing plate between the upper and lower 24L, 24R of left and right.
The grid heating chamber 9 being formed as rectangular box utilizes the metallic plate such as stainless steel, steel plate to form left and right, up and down and the wall of rear side, near its upper top and near bottom, utilize the 1 right radiant type electrical-heating source 22 up and down of radioactive electric heater such as sheath heater, 23(with reference to Figure 15) be set up in the mode of generally horizontal expansion., refer to that the midway of sheath heater repeatedly bends in a horizontal plane here so-called " expansion ", the state of wriggling in the mode that plane earth occupies large-scale area as far as possible, flat shape is the example of the representative of the shape becoming W font.
By to these upper and lower two radiant type electrical-heating sources 22,23 simultaneously or be individually energized, the oven cook (such as, cake, roast vegetables) that setting bakes the cooking (such as grilled fish), the grid cooking (such as pizza, gratin), atmosphere temperature in grid heating chamber 9 and carrying out are cooked can be carried out.Such as, the radiant type electrical-heating source 22 near its upper top of grid heating chamber 9 uses the electrical-heating source that maximum consumption electric power (maximum heat power) is 1200W, the electrical-heating source that the radiant type electrical-heating source 23 near bottom uses maximum consumption electric power to be 800W.
Space 26(is with reference to Figure 15) be the gap (being the gap identical with above-mentioned space 116) be formed between horizontal interval plate 25 and the outside framework 9D of grid heating chamber 9, this space 26 is finally communicated with rear part exhaust room 12, and the air in space 26 is directed into outside body A by rear part exhaust room 12 and is discharged.
In fig. 11, upper component room, rear portion space bar 28 interval 10 and rear part exhaust room 12, have bottom and arrive above-mentioned horizontal interval plate 25 and the height dimension of upper end arrival upper frame 20.Exhaust outlet 28A is formed in 2 positions on rear portion space bar 28, for discharging the cooling air entering upper component room 10.
(cooling forced draft fan)
Said forced draft fan 30 uses centrifugal type sirocco fan (representatively having multi blade fan) (with reference to Figure 11, Figure 12) in this embodiment, and the top being used in the rotating shaft 32 of CD-ROM drive motor 300 is fixed with the forced draft fan of alar part 30F.In addition forced draft fan 30 is arranged in above-mentioned right side cooling chamber 8R and left side cooling chamber 8L respectively, and the circuit substrate of left side IH heater coil 6LC, 6RC of cooling left and right and these heater coils itself, below explain.
Cooling unit CU, as shown in Figure 13, Figure 14, inserts from top and is fixed on above-mentioned cooling chamber 8R, 8L, comprising: component shell 34, contains the circuit substrate 41 forming translation circuit; And fan drum 37, be combined with this component shell 34, be formed with the plenum chamber 39 of forced draft fan 30 in inside.
Above-mentioned forced draft fan 30 is rotating shafts 32 of its drive motor 300 is level, so-called horizontal shaft type, is accommodated in the inside of the fan drum 37 be arranged among the cooling chamber 8R of right side.To surround the mode of multiple wing 30F of this forced draft fan 30 in the conglobate air-supply space of the inner shape of fan drum 37, be formed with plenum chamber 39.Suction inlet 37B is formed at the upper of the suction cylinder 37A of fan drum 37.Exhaust outlet (outlet) 37C is formed at an end of fan drum 37.
Fan drum 37, by combination 2 plastics shells 37D, 37E, combines with fixtures such as screws and is formed as an integral structure thing.Under this bonding state, insert this cooling space 8R, 8L from the top of cooling space 8R, 8L, and be fixed into suitable fixed part and do not move.
Above-mentioned component shell 34 is to be close to stateful connection in said fans shell 37, to import the cooling air of the exhaust outlet 37C discharge of discharging from the air of said fans shell 37, entirety has the rectangular shape of growing crosswise, and except be communicated with exhaust outlet 37C introducing port (not shown), the 1st exhaust outlet 34A described later and the 2nd exhaust outlet 34B only these 3 positions part except other channel floor airtight.
Printed circuit board (hereinafter referred to as circuit substrate) 41 is substrates of the translation circuit of the High frequency power be provided with to above-mentioned right IH heating source 6R, left IH heating source 6L supply regulation, there is the overall dimension of roughly mating with the interior space shape of component shell 34, be arranged on the side far away apart from grid heating chamber 9 among component shell 34, conversely, in the mode closely arriving only a few below mm close to the body housing 2 of exterior contour being formed body A.In addition, on this circuit substrate 41, the power supply that the CD-ROM drive motor 300 being provided with above-mentioned forced draft fan 30 together with the spaced-apart ground of translation circuit drives and control circuit portion.
What is called said translation circuit 210R, 210L in this circuit substrate 41, except the rectifier circuit 221 referring to shown in Figure 22, be connected to source power supply except input side bus (also can comprise), possess be made up of the coil 222 and smoothing capacitor 223 that are connected to DC side lead-out terminal DC circuit, resonating capacitor 224, the Electric control semiconductor becoming switch block and IGBT225, drive circuit 228 and free-wheel diode 226 circuit, containing IH heater coil 6RC, the 6LC as mechanical structure.
In the upper surface part of above-mentioned component shell 34, along the direction that the cooling air from forced draft fan 30 flows, form 2 above-mentioned 1st exhaust outlet 34A and the 2nd exhaust outlet 34B separatedly.2nd exhaust outlet 34B is arranged in the most downstream side position of the cooling air flowing of component shell 34, also has the aperture area than the large several times of the 1st exhaust outlet 34A.In addition, in fig. 14, Y1 ~ Y5 represents the flowing of the air sucked by forced draft fan 30 and the air be discharged, cooling air according to Y1, Y2 ... the order of Y5 flows away.
Cooling pipe 42 entirety is by plastic shaping, by overlap as the upper shell 42A of the integrally formed product of plastics and in the same manner as the integrally formed product of plastics flat lid (hereinafter referred to as " lower casing ") 42B and be screwed, form 3 airspaces 42F, 42G, 42H(described later in this inside between the two with reference to Figure 14).
Squit hole 42C is formed multiple along the upper surface of whole upper shell 42A in the mode running through its wall, is that the bore of each squit hole 42C is identical for gushing out from the hole of the cooling air of forced draft fan 30.
Spaced walls 42D is formed as straight line or curvilinear rib (raised line) shape by one-body molded among upper shell 42A, thus, divides and forms airspace 42F(reference Figure 14 that one end is communicated in the 1st exhaust outlet 34A of component shell 34).
Spaced walls 42E is similarly the U-shaped raised line shape of the flat shape be integrally formed among upper shell 42A, divides thus and forms airspace 42H(reference Figure 14 that one end is communicated in the 2nd exhaust outlet 34B of component shell 34).This airspace 42H is via connected entrance (hole) the 42J(Figure 14 reference of a sidepiece (in Fig. 9, Figure 11 near the side of component shell 34) being formed in spaced walls 42E), be communicated with maximum airspace 42G.
Further, the mode directly over the 2nd exhaust outlet 34B becoming above-mentioned component shell 34 with a sidepiece of airspace 42H (in Figure 14, Figure 16 near the side of component shell 34) arranges cooling pipe 42.Thus, the cooling air be discharged from component shell 34 enters the airspace 42H of cooling pipe 42, from launching to airspace 42G here, sprays from each squit hole 42C.Ventilating opening 42K is the ventilating opening of the quadrangle formed accordingly with the airspace 42H of upper shell 42A, and is the mouth of the wind of discharging cooling liquid crystal display picture 45R, 45L described later.
In fig. 14, radiating fin 43A, 43B of aluminum are provided with and are positioned at Electric control thyristor, other heat generation components such as IGBT225 among circuit substrate 41, throughout entirety, multiple thin fin is arranged formation regularly, this circuit substrate 41 is provided with translation circuit (explaining in fig. 22) 210R, 210L of above-mentioned right IH heating source 6R, left IH heating source 6L.This radiating fin 43A, 43B as shown in figure 14, be arranged among component shell 34 compared with bottom near the side at top, sufficient space is guaranteed in below, and cooling air Y4 flows in this space.
Namely, in the characteristic of forced draft fan 30, discharge ability (blowout ability) is uneven throughout the whole region of outlet (exhaust outlet 37C), the highest portion of discharge ability divides the below of the central point being up and down positioned at this exhaust outlet 37C, the position of above-mentioned radiating fin 43A, 43B is set upward, makes the position of above-mentioned radiating fin 43A, 43B not become position on the extended line of the central point up and down of this exhaust outlet 37C.In addition, can not towards be installed on circuit substrate 41 surface various small electronic components, printed wiring pattern part blowout cooling air.
The translation circuit 210L of left IH heating source 6L is by driving the special translation circuit MIV of main heater coil MC and driving separately the special translation circuit SIV1 ~ SIV4 of multiple secondary heater coil SC to form (with reference to Figure 25).
Grid heating chamber 9 is built in the below of left and right IH heating source 6L, 6R of body A, and between the inner side rear surface of body A, is formed with the space S X(of regulation with reference to Figure 15).That is, in order to arrange discharge duct 14 described later and in order to form exhaust chamber 12, grid heating chamber 9 is formed with the above-mentioned space S X of more than 10cm between the metastomium back face wall 2U of body housing 2.
Above-mentioned 2 independently cooling unit CU to insert from top and under the state being fixed on above-mentioned cooling chamber 8R, 8L, the part of fan drum 37 shown in Figure 14 and the large part local of transverse width is projected into above-mentioned space S X(with reference to Figure 15) in, in addition, the component shell 34 containing circuit substrate 41 forms at the left and right sides wall with grid heating chamber 9 space specified.In addition, what is called is said space here, referring to the space between the outside wall surface of the left and right of grid heating chamber 9 and component shell 34, is not the gap in opposite directions between 24L, 24R of dividing plate between the upper and lower of said left and right in this embodiment and the outer surface of component shell 34.
Like this, even if there is grid heating chamber 9, the part of the fan drum 37 of cooling unit CU is also configured in this space S X, when to observe from the mode of front projection, part due to the fan drum 37 of cooling unit CU becomes the state overlapping with grid heating chamber 9 local, can prevent the transverse width dimension increasing body A.
(functional unit E)
The functional unit E of the heating device of this execution mode is made up of (with reference to Figure 11 ~ Figure 12) previous action portion 60 and upper surface operating portion 61.
(previous action portion)
Before the left and right sides of body housing 2, be provided with plastic previous action framework 62R, 62L, be previous action portion 60 before this operation framework.Be respectively equipped with in this previous action portion 60: the action button 63A(of main power switch 63 is with reference to Figure 11), connect simultaneously or block left IH heating source 6L, right IH heating source 6R, the radiant type electrical-heating source 22 of radiant type central authorities' electrical-heating source 7 and grid heating chamber 9,23 all power supplys; The electric contact of the energising of right operation scale 64R, open and close controlling right IH heating source 6R and the right mains switch (not shown) of turn on angle (thermal power) thereof; And control the left-hand operation scale 64L of the energising of left IH heating source 6L and the left control switch (not shown) of turn on angle (thermal power) thereof in the same manner.Via main power switch 63 to all circuit member of formation supply powers shown in Figure 20.
In previous action portion 60, be provided with left display lamp 66L and right display lamp 66R, this left display lamp 66L only lights under the state be energized to left IH heating source 6L by left operation scale 64L, and this right display lamp 66R only lights under the state be energized to right IH heating source 6R by right operation scale 64R.
In addition, left operation scale 64L and right operation scale 64R is under the state do not used, as shown in Figure 10, given prominence to by the forward surface be pressed into the inside with not from operating portion 60 above, in a situation of use where, move away after user presses with finger once finger time, utilize the power that is built in the spring (not shown) of previous action framework 62 and give prominence to (with reference to Fig. 9), becoming user and grasp the state that surrounding makes it rotate.Further, in this stage, if or anticlockwise 1 indentation (notch), first respectively (minimum setting thermal power 120W's) energising is started to left IH heating source 6L and right IH heating source 6R to the right.
Therefore, the left operation scale 64L given prominence to if make further rotates to identical direction with any one in right operation scale 64R, then above-mentioned control assembly F reads the electric pulse of the regulation produced by built-in rotary encoder (not shown) according to the amount of its rotation, determine the turn on angle of this heating source, can thermal power setting be carried out.In addition, left operation scale 64L, right operation scale 64R all be that initial state or the state that have rotated to the left and right in midway have nothing to do, once user presses with finger once and is pressed into (pushing back) gives prominence to such regulation position to the forward surface not from operating portion 10 above, just can be maintained at this position, and left IH heating source 6L, right IH heating source 6R all can stop energising (even such as in the cooking instantaneously, as long as be also pressed into right operation scale 64R, right IH heating source 6R just can be made at once to stop energising).
In addition, if to above-mentioned main power switch 63(with reference to Figure 10) action button 63A(with reference to Figure 11) carry out opening operation, then after this operation, the operation of right operation scale 64R and left operation scale 64L becomes invalid simultaneously.Similarly, radiant type central authorities electrical-heating source 7 is also all blocked with the energising of the radiant type electrical-heating source 22,23 being arranged at grid heating chamber 9.
In addition, in the front lower of previous action framework 62, although not shown, but be provided with 3 independently timer scales.These timer scales are (also referred to as timer counter for operation timer switch.Not shown) scale, this timer switch time (set timer time) that energising is wished from starting left IH heating source 6L, right IH heating source 6R, electrical-heating source 7 energising of radiant type central authorities respectively, after have passed through this setting-up time, automatically cut off the electricity supply.
(upper surface operating portion)
Upper surface operating portion 61 as shown in figure 12, is made up of right thermal power setting operating portion 70, left thermal power setting operating portion 71 and central operation portion 72.Namely, anterior at the upper surface of top board 21, across the left and right center line of body A, the right thermal power setting operating portion 70 of right IH heating source 6R is configured with on right side, be configured with radiant type central authorities' electrical-heating source 7 at central portion and be arranged at the central operation portion 72 of radiant type electrical-heating source 22,23 of grid heating chamber 9, be configured with the left thermal power setting operating portion 71 of left IH heating source 6L in left side.
Be provided with various keys when using stainless steel or cooking-vessel made of iron (not shown) at this upper surface operating portion, be wherein provided with bread dedicated key 250.In addition, also can be following mode, namely, it not the dedicated key of the specific cooking (such as bread), and 1 special common key used for cooking-vessel is set, during this common key of each pressing, make the key (enter key 141 ~ 145 described later etc.) that can operate showing cooking name (such as bread) likely among comprehensive display device 100 described later, user inputs the cooking sign on of this hope with the region of this key of finger touch.In addition, above-mentioned cooking-vessel is inserted into the inside of this grid heating chamber 9 from the front openings 9A of grid heating chamber 9, also can be used even if be positioned on wire netting 109.
And, compound cooking key 251 is provided with, the situation (hereinafter referred to as " the composite heating cooking " or " the compound cooking ") that this compound cooking key 251 uses above-mentioned cooking-vessel for utilizing IH heating source and radiant type electrical-heating source 22,23 liang side and cooks at upper surface operating portion 61.Preferably in 1, can realize the composite heating of the radiant type electrical-heating source 22,23 of right IH heating source 6R and grid heating chamber 9, above-mentioned compound cooking key 251 is located at (with reference to Figure 10) near right thermal power setting operating portion 70 described later.
In addition, above-mentioned compound cooking key 251 also can be following mode, namely, make the key showing hope among the display frame (liquid crystal panel etc.) of synthetic display parts 100 described later, instead of fixed key, button, knob etc., by the region of user with this key of finger touch, the input of the compound cooking can be realized.That is, also can be in the display frame of synthetic display parts 100, the key shape utilizing software in time to show can to input, it is touched and the method for input operation.
(right thermal power setting operating portion)
At Figure 12, Tu27Zhong, at right thermal power setting operating portion 70, be provided with the one-touch key setting key portion 90 that user only presses each thermal power of the thermal power that once just can set right IH heating source 6R simply.Specifically, comprise these 3 one-touch keies of weak thermal power key 91, middle thermal power key 92 and heat-flash power bond 93, the thermal power of right IH heating source 6R is set as 300W by weak thermal power key 91, and middle thermal power key 92 is set as 750W, and heat-flash power bond 93 is set as 2.5kW.In addition, being provided with heat-flash power bond 94 in the right part in right one-touch key portion, when being 3kW when wanting to make the thermal power of right IH heating source 6R, pressing operation being carried out to this heat-flash power bond 94.
(left thermal power setting operating portion)
Equally, at the left thermal power setting operating portion 71 that the thermal power for left IH heating source 6L sets, the one-touch key group same with right thermal power setting operating portion 70 is also provided with.
(central operation portion)
At Figure 12 and Figure 27, in central operation portion 72, the action button 96 of the action button 95 being provided with to arrangement the console switch of radiant type electrical-heating source 22,23 energising started the grid heating chamber 9 for grid (baking) cooking and oven cook and the console switch stopping this energising.
In central operation portion 72, laterally line up the action button 97A, the 97B that are provided with temperature regulation switch by line, action button 97A, the 97B of this temperature regulation switch set the control temperature of the grid cooking undertaken by radiant type electrical-heating source 22,23 and the electromagnetism cooking undertaken by left IH heating source 6L, right IH heating source 6R in the mode once adding or deducted.In addition, be also provided with configuration switch 99A, 99B here, this configuration switch 99A, 99B set power supply connection-roof-cut resistence button 98 and the thermal power of radiant type central authorities electrical-heating source 7 in grade mode hierarchically added or deduct.
In addition, as shown in figure 27, convenient menu key 130 is provided with in central operation portion 72.When operating this convenient menu key 130, (left IH heating source 6L is used in the fried cooking of setting, right IH heating source 6R), fried preheat mode display (uses left IH heating source 6L, right IH heating source 6R, oil is heated to the preheat temperature of regulation), the timer cooking (is only setting left IH heating source 6L with timer switch, right IH heating source 6R, radiant type central authorities electrical-heating source 7, be located at the radiant type electrical-heating source 22 of the inside of grid heating chamber 9, be energized in the time of 23 and cook) time, as long as pressing, synthetic display parts 100 described later are just made to read the input picture of hope simply, state display frame.
On the right side of bread dedicated key 250, be provided with the convenient menu key 131R of right IH be made up of hard button, the convenient menu key 131R of this right IH is the setting button for carrying out various setting to right IH heating source 6R.Same setting button is also provided with to left IH heating source 6L.
Operation operation, start the starting switch of above-mentioned timer counter (not shown) time, measure elapsed time from this starting moment and with numerical monitor in above-mentioned liquid crystal display picture 45R, 45L.In addition, the display light of liquid crystal display picture 45R, 45L through top board 21, the elapsed time with " dividing " and " second " for unit is shown in user clearly.
The left thermal power setting operating portion 71 in left side is also identical with right thermal power setting operating portion 70, be provided with left timer switch (not shown) and left liquid crystal display part 45L, above-mentioned left timer switch and left liquid crystal display part 45L, across the left and right centre line C L 1 of body 1, are located at the position of left and right object.
(thermal power display lamp)
In the forward right side of top board 21, the position between right IH heating source 6R and right thermal power setting operating portion 70, is provided with the right thermal power display lamp 101R of the size of the thermal power showing right IH heating source 6R.Right thermal power display lamp 101R is located near the lower surface of top board 21, with make display light via (through) top board 21 sends from its lower surface to upper surface side.
Equally, the left thermal power display lamp 101L showing the size of the thermal power of left IH heating source 6L is located at the position between the front left side of top board 21, left IH heating source 6L and left thermal power setting operating portion 71, left thermal power display lamp 101L is located near the lower surface of top board 21, with make display light via (through) top board 21 sends from its lower surface to upper surface side.In addition, these display lamps 101R, 101L omits expression in the circuit diagram of Figure 22.
(display unit G)
The display unit G of the heating device of this execution mode is made up of synthetic display parts 100.
As shown in Figure 10, Figure 12 and Figure 27, synthetic display parts 100 be located at the central portion of the left and right directions of top board 21, the front side of fore-and-aft direction.These synthetic display parts 100 are formed primarily of display panels, near the lower surface being located at top board 21, with make display light via (through) top board 21 sends from its lower surface to upper surface side.
Synthetic display parts 100 can input or confirm the "on" position (thermal power and time etc.) of the radiant type electrical-heating source 22,23 of left IH heating source 6L, right IH heating source 6R, radiant type central authorities' electrical-heating source 7 and grid heating chamber 9 etc.That is,
(1) function (whether being that cooking action is medium) of left and right IH heating source 6L, 6R
(2) function (whether being that cooking action is medium) of radiant type central authorities electrical-heating source 7
(3) when cooking in grid heating chamber 9, with operating sequence when carrying out this cooking, function (such as, whether current to carry out in the cooking of roaster, grid, baking box some) 3 scenes accordingly, conclusivelyed show the heating condition of running-active status, thermal power etc. by word, diagram, diagram etc.
The liquid crystal panel that these synthetic display parts 100 use is well-known dot matrix type liquid crystal panel.In addition, the picture of high definition (be equivalent to the QVGA of the resolution possessing 320 × 240 pixels or 640 × 480 dot matrix, the VGA of 16 looks can be shown) can be realized, even if also multiple word can be shown when showing word.Liquid crystal panel is not 1 layer, in order to increase display information, also can use with upper and lower more than the 2 layers liquid crystal panels shown.The size of the viewing area of liquid crystal panel is the rectangle of vertical (fore-and-aft direction) about 4cm, horizontal about 10cm.
In addition, according to heating source, the picture area of display information is divided into multiple (with reference to Figure 27).Such as picture is assigned in total 10 regions, defines as follows.
(1) the corresponding region 100L(thermal power 100L1 of left IH heating source 6L and the total 2 of time and cooking menu 100L2).
(2) the radiant type central authorities corresponding region 100M(thermal power 100M1 of electrical-heating source 7 and the total 2 of time 100M2).
(3) the corresponding region 100R(thermal power 100R1 of right IH heating source 6R and the total 2 of time 100R2).
(4) the region 100G for cooking of grid heating chamber 9.
(5) guidance field (1 100GD) of notification user at any time or shown the reference information of the various cooking by the operation of user, and when abnormal running detects or when inappropriate operation uses.
(6) there is key viewing area 100F that directly can input the function of various cooking conditions etc., that show mutually independently 6 enter keies 141,142,143,144,145,146.
(7) any viewing area 100N.
As Figure 27 and as shown in Figure 28, at the corresponding region 100L of left IH heating source 6L, specifically at time and cooking menu 100L2, select use as cooking menu, with have heated at high speed options button E1A, heat up water with options button E1B, scald boil options button E1C, preheating options button E2A, the options button E2B that cooks, fried options button E3A, the scene of these 7 keys of options button E3B of heating up water+be incubated simultaneously (guide look state) show.Figure 28 is the figure representing this state.
Figure 30 is the figure representing the situation that have selected heated at high speed.Retain display by above-mentioned options button E1A, other options button all disappears, and have selected the cooking menu that " heated at high speed " represented by E1A is such, showing current is in heating action executing.
Be judged as that the base diameter of heating object N is ordinary pan degree by heating object mounting judging part 280, and this heating object is had above main heater coil MC, and when not being when also striding across size such on 4 secondary heater coil SC1 ~ SC4,7 keys E1A, E1B, E1C, E2A, E2B, E3A, E3B that cooking menu is selected are not shown.That is, when large like that on also to stride across in secondary heater coil SC1 ~ SC4 some heating object N, 7 keys E1A, E1B, E1C, E2A, E2B, E3A, E3B that cooking menu is selected can be selected at first.
As long as press the key 100N of any viewing area, just with word, the detailed information etc. contributing to cooking can be shown in the guidance field 100GD of synthetic display parts 100.
In addition, the background color of above-mentioned viewing area is usually overall to be shown by unified color (such as white), but viewing area 100R and 100G is when above-mentioned " the compound cooking ", is changing into identical color and is the color different from viewing area 100L, 100M of other heating source (such as yellow, light blue etc.).When display frame is liquid crystal, such color change can be switched by the action of its backlight and realize, but omits detailed description.
Each region (viewing area) of above-mentioned total 10 is implemented on the liquid crystal panel of synthetic display parts 100, but is not physically formed separately or divide in picture itself.Namely, because be the region that the software (program of personal computer) shown by picture is established, so utilize this software can change each area, shape, position, but consider that user's is easy to use, with the left and right of left IH heating source 6L, radiant type central authorities each heating source such as electrical-heating source 7, right IH heating source 6R put in order accordingly, be always identical putting in order.
That is, on picture, the information about left IH heating source 6L is displayed on left side, and the information about radiant type central authorities electrical-heating source 7 is displayed on center, and the information about right IH heating source 6R is displayed on right side.In addition, the viewing area 100G for cooking of grid heating chamber 9 is necessarily displayed on corresponding region 100L, the radiant type central authorities corresponding region 100M of electrical-heating source 7 of above-mentioned left IH heating source 6L, the nearby side of the corresponding region 100R of right IH heating source 6R.And no matter the viewing area 100F of enter key is necessarily displayed on forefront in what.
In addition, above-mentioned enter key 141 ~ 146 adopts the contact key being waited touch and static capacity change by user with finger, the upper surface of the glass plate of upper surface that touch the position corresponding with key surface gently by user, that cover synthetic display parts 100, produces the effective input signal relative to circuit for controlling electricity turning 200.
On the above-mentioned glass plate of part (region) forming above-mentioned enter key 141 ~ 146, word, figure, the symbol (comprising the arrow mark of the key 143,145 of Figure 27) of the input function of key is not represented by printing, marking etc., but the liquid crystal panel of the below at these keys (key viewing area F), becomes the structure of the word of the input function of the operation scenario display expression key for these enter keies, figure, symbol.
And the enter key 141 ~ 146 of not all is shown all the time simultaneously.Even if for the key (without the need to carrying out the enter key operated) that operation is also invalid, as the enter key 144 of Figure 27, liquid crystal panel not showing input function word and figure, becoming non-effective state.If the enter key of effective status 141 ~ 146 is operated, then relative to the control program of the action of decision circuit for controlling electricity turning 200, become effective operation instruction signal.
In addition, enter key 146 is when wanting to determine cooking conditions and the key of the situation effect of finishing drilling beginning to cook of looking on the bright side of things.When cooking action starts operating once this enter key 146, be changed to the enter key (with reference to Figure 27, Figure 28) of " stopping " such display.Sometimes each input command of other enter key 141 ~ 145 also changes, and effective input function easily can be identified by each shown word, figure, symbol etc.
In addition, when wanting to stop specific heating source in the process using multiple heating source, such as, when pressing enter key 143 in the scene of Figure 27, show the corresponding region 100M from radiant type central authorities electrical-heating source 7, according to the order of the corresponding region 100L of left IH heating source 6L, the corresponding region 100R of right IH heating source 6R, each corresponding region integral color changes or is glisteningly selected, so press stop key 146 after (selection) its corresponding region of wishing of breathing out.On the contrary, when pressing enter key 145, can with the way selection rotated round about, can from the corresponding region 100M of radiant type central authorities electrical-heating source 7, select the corresponding region 100L of the corresponding region 100R of right IH heating source 6R, left IH heating source 6L successively, behind its corresponding region of wishing of breathing out, pressing stop key 146.
AM is the significant notation that the transverse direction performed in cooking action represents the title of heating source, and when showing AM, mean that this heating source is carved at this moment and drive, by the presence or absence of the display of this significant notation, user can identify the action of heating source.
(grid heating chamber 9)
The front openings 9A of grid heating chamber 9 is as shown in Figure 10 and Figure 15, covered freely by door 13 opening and closing, door 13 utilizes the supporting device such as track, roller (not shown) to be held in above-mentioned grid heating chamber 9, to make to be moved freely along the longitudinal direction by the operation of user.In addition, be provided with the luffer boards of heat resistant glass at the central portion 13A of door 13, the inside of grid heating chamber 9 can be seen from outside.13B is the handle forwards outstanding for opening and closing operations door 13.In addition, grid heating chamber 9 as described above, is formed with the space S X(of regulation with reference to Figure 15 between the inner side rear surface of body), utilize this spatial placement discharge duct 14 described later, be also formed with exhaust chamber 12.
Door 13, the position, the left and right sides of heating chamber 9, the leading section of the metal track that front and back extend is linked, and when carrying out the many cooking of oil, usually on this track, loads the metal dish 108(that connects with reference to Figure 15).Metal wire netting 109 is placed in and connects on dish 108 and used.Thus, when forwards flatly pulling out door, along with this pull-out action, connecing when dish 108(loads wire netting 109 is this wire netting) also flatly pulled out to the front of grid heating chamber 9 together.In addition, being only support by only both ends, left and right being positioned on metal track owing to connecing dish 108, connecing dish 108 so can take off individually on track.
In addition, the shape of wire netting 109 is studied with the position, shape etc. connecing dish 108, to make cannot to pull out because colliding the heater 23 of bottom when forwards pull-out connects dish 108.Like this, if this grid heating chamber 9 have to load on wire netting 109 meat, fish, other food and to radiant type electrical-heating source 22,23(simultaneously or time segment etc.) energising, then heat from upper and lower surface " the two sides baking function " of these food.In addition, in this grid heating chamber 9, the storehouse temperature transducer 242(reference Figure 22 detecting this indoor temperature is provided with), also storehouse temperature can be maintained the temperature of hope and cook.
As shown in figure 15, be made up of the metal inner frame 9C of tubular and outside framework 9D, this inner frame 9C has opening 9B in whole rear (back side) side to grid heating chamber 9, and has opening 9A at front side; (below) gap 113 that this outside framework 9D maintenance specifies, (top) gap 114 and gap, left and right sides side (115.Not shown) cover the whole outside of this inner frame.In addition, in fig .15,307 the space between the outside framework 9D of grid heating chamber 9 and the diapire face of body housing 2 is formed in.
Outside framework 9D has these 5 faces of left and right sides wall, upper surface, bottom surface and the back side, and entirety is formed by steel plate etc.The inner surface of these inner frames 9C and outside framework 9D, forms the good coating of cleaning property such as enamel or coating heat resistant finish film, or forms infrared emission tunicle.When being formed with infrared emission tunicle, increasing the infrared emission amount for heating object N such as food, improving the efficiency of heating surface, improve barbecue in addition uneven.9E is formed in the exhaust outlet on the top, back wall face of outside framework 9D.
Metal discharge duct 14 is configured to the outside of this exhaust outlet 9E continuous, the flowing path section of this metal discharge duct 14 is square or rectangulars, as shown in figure 15, tilt obliquely upward along with going from downward trip side, midway, vertically bend afterwards, final upper end opening 14A be communicated to be formed at upper frame 20 central ventilated mouth 20C near.
121 is deodorizing catalyst of downstream side position that be arranged on the inside of discharge duct 14, exhaust outlet 9E, by being heated and activate by catalyst electric heater (121H), play the effect of removing foul smell composition from the exhaust of the heat of grid heating chamber 9 inside by discharge duct 14.
(exhaust structure, intake structure)
As mentioned above, at the rear portion of upper frame 20, form right ventilating opening (the becoming air entry) 20B, central ventilated mouth (becoming exhaust outlet) 20C, the left ventilating opening 20D that grow crosswise respectively.On these 3 after ventilation mouths, to cover the overall mode in top, be formed with the metal flat lid 132(of countless little intercommunicating pores throughout entirety with reference to Figure 10) detachably loaded.Lid 132, except being be formed on a metal plate except the component (punch metal plate) of the aperture of intercommunicating pore by punch process, also can be wire netting, tiny cancellate component.No matter be any, as long as the finger of user, foreign matter etc. do not enter into the such component of each ventilating opening 20B, 20C, 20D from top.
The outside room airs such as kitchen, immediately below the right part of above-mentioned lid 132, can be imported to left and right cooling chamber 8R, the 8L among body A by the intercommunicating pore of lid 132 by the suction inlet 37B being positioned at suction cylinder 37A upper of said fans shell 37.
As shown in figure 11, be the state of upper-end part of driving among above-mentioned rear part exhaust room 12 of above-mentioned discharge duct 14.In other words, in the left and right sides of discharge duct 14, guarantee with the space 116(of the surrounding being formed in above-mentioned grid heating chamber 9 with reference to Figure 15) the rear part exhaust room 12 that is communicated with.The ground, space 116 that grid heating chamber 9 has regulation between above-mentioned horizontal interval plate 25 is set up (with reference to Figure 15), but this space 116 is finally communicated with rear part exhaust room 12.As described above, the inside of upper component room 10 is communicated with rear part exhaust room 12 by the 1 couple of exhaust outlet 28A being formed at rear portion space bar 28, so the cooling air (the arrow mark Y5 of Figure 14) of flowing is discharged to the outside of body 1 as the arrow mark Y9 of Figure 11 among upper component room 10, but now, guided by this cooling air, the air of inside, above-mentioned space 116 is also discharged together.
(supplement heat rejecter structure)
At Figure 13, Tu14Zhong, front piece shell 46 is shells that inside contains installation base plate 56, this installation base plate 56 install and be fixed with the various elec-tric-electronic components 57 of above-mentioned upper surface operating portion 61, the light-emitting component (LED) etc. of thermal power when utilizing light representations induction heating cooking, this front piece shell 46 by the transparent plastic of upper surface open lower pipeline 46A and carry out the airtight upper pipeline 46B becoming the transparent plastic of lid with the upper surface open of the mode blocked to this lower pipeline 46A and formed.Ventilating opening 46R, 46L(is offered respectively with reference to Figure 13 in the right part of lower pipeline 46A and left part), the breach 46C allowing to ventilate also is formed at the rear portion of central authorities.
At the end face of upper pipeline 46B, central authorities are provided with above-mentioned synthetic display parts 100, are also provided with liquid crystal display picture 45R, 45L(in left and right with reference to Figure 14).The cooling air of above-mentioned forced draft fan 30, the airspace 42H of cooling pipe 42 is entered into from the 2nd exhaust outlet 34B of above-mentioned component shell 34, from the ventilating opening 42K here by being formed accordingly with airspace 42H, enter into front piece shell 46 from the below of liquid crystal display picture 45R, 45L, and be discharged to upper component room 10 from breach 46C.Thus, liquid crystal display picture 45R, 45L, synthetic display parts 100 are cooled by the cooling air from forced draft fan 30 respectively all the time.
Particularly from the cooling air of the 2nd exhaust outlet 34B of this component shell 34, because become the wind of left and right IH heater coil 6LC, 6RC of high temperature when not being and cooling induction heating action, so its temperature is low, although the air quantity of cooling air is few, the temperature of liquid crystal display picture 45R, 45L and synthetic display parts 100 rises all effectively suppressed.Particularly, because the rear positions becoming left and right IH heater coil 6LC, the 6RC in downstream in the flowing (the arrow mark Y5 of Figure 14) of cooling air is difficult to turn cold, so in this embodiment, wind direction airspace 42F from the low temperature of the 1st exhaust outlet 34A directly supplies, and utilizes this part of this air cooling.
(auxiliary exhaust structure)
As shown in figure 15, in the deodorizing downstream of catalyst 121 of discharge duct 14, the cylindrical base 14B of the shape of the one-level that caves in is formed with downwards.Ventilation hole 14C is formed in this cylindrical base 14B.Forced draft fan 106 is axial fans of the auxiliary exhaust in the face of this ventilation hole 14C, and 106A is its rotor, and 106B is the CD-ROM drive motor that this rotor 106A is rotated, and this forced draft fan 106 is supported in discharge duct 14.In the cooking utilizing grid heating chamber 9, because this grid heating chamber 9 becomes high temperature, so air pressure inside rises naturally, the atmosphere of high temperature is discharged thereupon, rise in discharge duct 14, but this forced draft fan 106 is operated, by the air intake discharge duct 14 of the inside of body A as shown in arrow mark Y7, thus the high temperature air of grid heating chamber 9 is guided by this ozone, while falling at temperature, be discharged as shown in arrow mark Y8 from the upper end opening 14A of discharge duct 14.
The axial fan 106 of auxiliary exhaust not operates all the time in the running of cooking device, operates when utilizing grid heating chamber 9 to carry out cooking.This is because in this case, the hot gas of high temperature is discharged from grid heating chamber 9 to discharge duct 14.In addition, the flowing of the air of the Y1 ~ Y5 in the flowing of the air of Y7, Y8 in this Figure 15 and Figure 14 also can be completely uncorrelated and be discontinuous flowing.
(control assembly F)
Control assembly (control part) F of the heating device of this execution mode is made up of (with reference to Figure 22) circuit for controlling electricity turning 200.
Figure 22 is the inscape figure of the control circuit entirety representing heating device, and the circuit for controlling electricity turning 200 that this control circuit is made up of one or more microcomputers built-in is formed.Circuit for controlling electricity turning 200 is made up of input part 201, efferent 202, storage part 203 and calculation control unit (CPU) 204 these 4 part, via constant voltage circuit (not shown) supply DC power supply, play the effect of the control assembly at the center controlling all heating sources and display unit G.In fig. 22, relative to the source power supply of 100V or 200V voltage, via rectification circuit (also referred to as rectifier circuit) 221, connect the translation circuit 210R of right IH heating source 6R.
Equally, in parallel with the translation circuit 210R of this right IH heating source 6R, and with the right IH heater coil 6RC(load coil shown in Figure 22) the translation circuit 210L of the same left IH heating source 6L of basic structure, via above-mentioned rectifier circuit 221, be connected to above-mentioned source power supply.That is, left IH heater coil 6LC(load coil) comprising: rectifier circuit 221, input side is connected to the bus of source power supply; DC circuit, is made up of the coil 222 and smoothing capacitor 223 being connected to this DC side lead-out terminal; Resonant circuit, the parallel circuits of the right IH heater coil 6RC and resonating capacitor 224 that are connected to the tie point of coil 222 and smoothing capacitor 223 by 1 end is formed; And as the IGBT225 of switch block, collector electrode side is connected to the other end of this resonant circuit.
The difference that the translation circuit 210L of left IH heating source 6L and the translation circuit 210R of right IH heating source 6R is large has main heater coil MC and secondary heater coil SC.Therefore, left IH heating source 6L translation circuit 210L by both inner coil LC2 and outer coil LC1, namely main heater coil MC is supplied the main heater coil of electric power translation circuit MIV and aftermentioned 4 translation circuit SIV1 ~ SIV4 that independently secondary heater coil SC1 ~ SC4 separately supplies the secondary heater coil of electric power are formed.Further, energising opportunity of 4 secondary heater coil SC1 ~ SC4, turn on angle are all determined by circuit for controlling electricity turning 200.
Translation circuit MIV due to main heater coil adopts variable frequency to export control mode, so by making this frequency change, can make converter electric power, namely obtained thermal power is variable.When the driving frequency of translation circuit MIV is set high, converter electric power reduces, the circuit of switch block (IGBT) 225, resonating capacitor 224 etc. forms the loss increase of elec-tric-electronic element, caloric value also becomes many, bad, so determine set upper limit frequency, be controlled to and frequency is changed below this set upper limit frequency.Minimum electric power can be become with electric power during upper limiting frequency continuous control, but when dropping into the electric power less than this minimum electric power, by also controlling with the current on time carrying out intermittently being energized, final little thermal power can be obtained.Translation circuit SIV1 ~ the SIV4 of secondary heater coil can control thermal power similarly.
In addition, the driving frequency of the driving of translation circuit MIV is substantially identical with the driving frequency of the translation circuit SIV1 ~ SIV4 of secondary heater coil.In case of a change, the difference that circuit for controlling electricity turning 200 controls driving frequency departs from the scope of 15 ~ 20kHz, makes the difference of both driving frequencies not become audible frequency region.This is because, when driving the load coil of more than 2 at the same time, the difference because of this frequency become be called as beat sound or interference sound such, the reason of uncomfortable sound.
In addition, the translation circuit SIV1 ~ SIV4 of main translation circuit MIV and secondary heater coil is without the need to driving all the time simultaneously, and the thermal power that such as also can indicate according to circuit for controlling electricity turning 200, switches to the short time interval and alternately carry out heating action.Here so-called " simultaneously ", the opportunity that energising starts and the situation completely simultaneously on opportunity that energising stops is referred to.
Heater drive circuit 211 is heater drive circuits of radiant type central authorities electrical-heating source 7, Reference numeral 212 be drive grid heating chamber 9 storehouse in the heater drive circuit of heating radiant type electrical-heating source 22, Reference numeral 213 be drive grid heating chamber 9 in the same manner storehouse in the heater drive circuit of heating radiant type electrical-heating source 23, Reference numeral 214 drives the heater drive circuit being located at the catalyst heater 121H of the midway of above-mentioned discharge duct 14, and Reference numeral 215 is the drive circuits of the liquid crystal panel driving synthetic display parts 100.
The emitter of above-mentioned IGBT225 is connected to the common connecting point of smoothing capacitor 223 and rectifier circuit 221.Free-wheel diode 226 is connected to emitter and the inter-collector of IGBT225, makes the anode of this free-wheel diode 226 become emitter side.Reference numeral N represents the heating objects such as metal pan.
Current detection sensor 227 detects the electric current flowed in the resonant circuit be made up of the parallel circuits of right IH heater coil 6RC and resonating capacitor 224R.The detection of current detection sensor 227 exports and inputs to heating object mounting judging part 280 described later, by this heating object mounting judging part 280, input part to circuit for controlling electricity turning 200 supplies the determination information whether having heating object N such, and the existence carrying out heating object N judges.In addition, when unsuitable pot (heating object N) etc. is used to induction heating, or due to some fault etc. too little current or the super-high-current of the difference compared with the current value of standard with more than setting detected when, utilize circuit for controlling electricity turning 200 control IGBT225, instantaneously energising of stopping load coil 220 by drive circuit 228.
Equally, because the translation circuit MIV of main heater coil and are separately circuit structures equal with the translation circuit 210R of right IH heating source 6R to 4 translation circuit SIV1 ~ SIV4 that independently secondary heater coil SC1 ~ SC4 supplies the secondary heater coil of electric power, so omit the description, these common circuit structures comprehensive, in fig. 22 as left IH heating source 6L translation circuit 210L and represent.
In fig. 22, Reference numeral 6LC is left side IH heater coil, and Reference numeral 224L is resonating capacitor.The tie point that the translation circuit MIV of main heater coil MC is also connected to above-mentioned rectifier circuit 221, the DC circuit be made up of coil 222 and smoothing capacitor 223, one end are connected to coil 222 and smoothing capacitor 223, and the resonant circuit be made up of the parallel circuits of main heater coil MC and resonating capacitor 224 and collector electrode side are connected to the IGBT225 etc. becoming switch block of the other end of this resonant circuit.
Current detection sensor 227 although not shown, but is located at the translation circuit 210L of left IH heating source 6L similarly.In addition, as current detection sensor 227, useful use resistor measures the shunt of electric current, the method for current transformer formation.
Drive circuit 260 is the circuit driving above-mentioned main heater coil translation circuit MIV, plays the effect same with above-mentioned drive circuit 228.In the same manner, drive circuit 261 ~ 264 is the circuit driving above-mentioned secondary heater coil translation circuit SIV1 ~ SIV4 respectively.
Current detection sensor 266 is the current sensors detecting the electric current flowed in the resonant circuit be made up of the parallel circuits of above-mentioned main heater coil MC and resonating capacitor (not shown), in the same manner, current detection sensor 267A, 267B, 267C(is not shown), 267D(is not shown) be the current sensor detecting the electric current flowed in the resonant circuit be made up of the parallel circuits of secondary heater coil SC and resonating capacitor (not shown).These current sensors 266,267A, 267B, 267C and 267D play the effect same with above-mentioned current detection sensor 227.In addition, the current sensor of resonant circuit side is as described above called as outlet side current sensor, but relative to this, the current sensor being called input side current sensor is more set by source power supply (AC power) 75 side at the rectification circuit 76 than DC power portion 80 described later, utilize the current sensor standby current value of these input sides and outlet side both sides, action and the abnormality of carrying out resonant circuit monitor.
Heating in the heating device of heating object N with induction heating mode as the present invention, for the control circuit power making High frequency power flow in IH heater coil 6LC, 6RC of left and right, be called as so-called resonance type converter.This control circuit power is following structure, namely, comprise heating object N(metal object in connection) the inductor of left and right IH heater coil 6LC, 6RC and the circuit of resonating capacitor (224L, 224R of Figure 22) in, with the driving frequency on-off control switch circuit element (225 of IGBT, Figure 20) of about 20 ~ 40kHz.
In addition, resonance type converter has the current resonance type that is called as and is suitable for 200V power supply and is called as the series resonance type being suitable for 100V power supply.In the structure of such resonance type translation circuit, according to the connecting portion how using relay circuit switching right and left IH heater coil 6LC, 6RC and resonating capacitor 224L, 224R, be divided into and be called as so-called half-bridge circuit and full-bridge circuit mode.
At use resonance type translation circuit when induction heating heating object, when heating object N is the magnetic material such as iron or magnetic stainless steel, the active component (equivalent resistance) contributing to heating is large, because electric power easily drops into so easily heat, but when heating object N be aluminium etc. by magnetic material, because equivalent resistance diminishes, so be difficult to be changing into Joule heat by the vortex flow that heating object N responds to.Therefore, knownly carry out following control, namely, when the material of heating object N is determined to be magnetic material, automatically translation circuit structural change is become half-bridge mode, this external magnetic by use heating object N when, switch to full-bridge mode (such as, Japanese Unexamined Patent Publication 5-251172, Japanese Unexamined Patent Publication 9-185986, Japanese Unexamined Patent Publication 2007-80751 publication).Only otherwise express especially, translation circuit 210R, 210L just both also can be made up of full-bridge circuit half-bridge circuit in the present invention.
Figure 22 becomes simple to make explanation, employs the translation circuit of semi-bridge resonant vibration type, but in fact in order to implement the present invention, the full-bridge circuit preferably as Figure 23, Figure 24.
If further illustrate with reference to Figure 23, Figure 24, then heating device has power supply unit (power circuit) 74.Power supply unit 74 has DC power portion 80, main translation circuit MIV, 4 subcommutation circuit SIV1 ~ SIV4.In addition, in fig 23, only record main translation circuit MIV and subcommutation circuit SIV1 these 2, but with have tie point CP1, CP2 converter circuit SIV same structure, 3 subcommutation circuit SIV2 ~ SIV4 as shown in figure 24, be connected to circuit for controlling electricity turning 200 in parallel respectively.That is, identically with subcommutation circuit SIV1, tie point CP3, CP4, CP5, CP6, CP7 of becoming the both ends of other 3 subcommutation circuit SIV2, SIV3, SIV4 are connected to the circuit of tie point CP1, CP2.In addition, the drive circuit with the function same with drive circuit 228A, the 228B shown in Figure 23 is connected to 3 subcommutation circuit SIV2 ~ SIV4.Relevant drive circuit 228A, 228B explain later.
As can be clearly described by the above that, 4 subcommutation circuit SIV1 ~ SIV4 are connected to DC power portion 80 and circuit for controlling electricity turning 200 respectively in parallel.
DC power portion 80 is connected to AC power 75.AC power 75 is single-phase or the commercial ac power source of three-phase.AC power 75 is connected to the rectification circuit 76 alternating current exported from this AC power 75 being carried out to full-wave rectification.Rectification circuit 76 is connected to the smmothing capacitor 86 of the direct voltage smoothing made by this rectification circuit full-wave rectification.
Main translation circuit MIV is after exchange conversion is become direct current with 4 subcommutation circuit SIV1 ~ SIV4, by this DC converting be further the interchange of high frequency, full-bridge converter.Each translation circuit MIV, SIV1 ~ SIV4 is connected to the DC power portion 80 of power supply unit 74.
Main translation circuit MIV and subcommutation circuit SIV1 have respectively 2 groups of switch elements to (also referred to as pairing, group) 77A, 78A, 77B, 78B.As illustrated, main translation circuit MC switch element to 77A and 78A have respectively be connected in series 2 groups of switch elements 79A, 81A and 88A, 89A.The switch element of subcommutation circuit SIV1 to 77B and 78B have respectively be connected in series 2 groups of switch elements 102B, 103B and 104B, 105B.Although not shown, but in subcommutation circuit SIV2, SIV3, the SIV4 shown in Figure 24, also possess 2 groups of switch elements as described above respectively.
Further, main heater coil MC and the series resonant circuit that comprises resonating capacitor 110A be connected to switch element 79A, 81A output point between and switch element 88A, 89A output point between.In addition, secondary heater coil SC1 and the series resonant circuit that comprises resonating capacitor 110B be connected to switch element 102B, 103B output point between and switch element 104B, 105B output point between.Similarly although not shown, but other 3 subcommutation circuit SIV2, SIV3, SIV4 are also similarly connected to secondary heater coil SC2 ~ SC4 respectively and comprise the series resonant circuit of resonating capacitor (not shown) 110A.
2 groups of switch elements of main translation circuit MIV drive circuit 228A, 228B are connected to respectively to 77A, 78A.2 groups of switch elements of subcommutation circuit 1 drive circuit 228C, 228D are connected to 77B, 78B.It is all not shown that remaining 3 subcommutation circuit SIV2 ~ SIV4 are also one by one connected to drive circuit 228E, 228F, 228G, 228H, 228I, 228J(respectively).Further, these all drive circuit 228A ~ 228J are connected to heating object mounting judging part 280 via circuit for controlling electricity turning 200.
Circuit for controlling electricity turning 200 has to be made to the main translation circuit MIV function identical with the frequency of the switching drive signal that all subcommutation circuit SIV1 ~ SIV4 export.
Because have above structure, so after user has connected main power source by previous action portion 60, when indicating heat driven to start by upper surface operating portion 61,60 pairs, previous action portion circuit for controlling electricity turning 200, the output of AC power 75 utilizes after DC power portion 80 is transformed into direct current, based on the command signal (switching drive signal) exported from circuit for controlling electricity turning 200, omit the action specification of other drive circuit from each drive circuit 228A, 228B, 228C, 228C() output drive signal.So switch element 79A, 89A and 81A, 88A, switch element 102B, 105B and 103B, 104B alternately on-off respectively, above-mentioned direct current is transformed to the interchange of high frequency again, applies high-frequency current to main heater coil MC and secondary heater coil SC1.Thus, induction heating action is started.In addition, the frequency from circuit for controlling electricity turning 200 to the above-mentioned switching drive signal of main translation circuit MIV and subcommutation circuit SIV1 output is automatically set to equal.
Because have above structure, so circuit for controlling electricity turning 200 has following function, namely, when flowing through high-frequency current clockwise in main heater coil MC, control main translation circuit MIV and subcommutation circuit SIV1 ~ SIV4, make in region (outer region of main heater coil) adjacent each other, the high-frequency current IB putting on 4 secondary heater coil SC1 ~ SC4 and the high-frequency current IA flowed in main coil MC flows to same direction (counterclockwise).
On the contrary, when flowing through high-frequency current IA counterclockwise in main heater coil MC, control main translation circuit MIV and all subcommutation circuit SIV1 ~ SIV4, make the high-frequency current IB putting on secondary heater coil SC1 ~ SC4 at mutual adjacent area, flow to same direction (clockwise).This can suppress the generation of the different sound caused because of the difference of frequency as described above.
As described above, when utilizing the energising induction heating heating object N of left and right IH heater coil 6LC, 6RC, when heating object N is manufactured by magnetic materials such as iron, connecting resonating capacitor separately at IH heater coil 6LC, 6RC (is 224L, 224R in fig. 22, be 110A and 110B in fig 23) resonant circuit in, (IGBT, be Reference numeral 225 in fig. 22 with the driving frequency on-off control switch circuit element of about 20 ~ 40kHz.Be switch element 77A, 81A, 88A, 89A, 102B, 103B, 104B, 105B in fig 23), flow through the electric current of the frequency of about 20 ~ 40kHz.
On the other hand, when heating object N by the high conductivity such as aluminium, copper material manufacture, in order to obtain wish add thermal output, need by flowing through big current in left and right IH heater coil 6LC, 6RC and respond to large electric current in the bottom surface of heating object N.Therefore, when the heating object N that the material by high conductivity manufactures, on-off control is carried out with the driving frequency of 60 ~ 70kHz.
In fig. 22, motor drive circuit 33 is the drive circuits remaining the CD-ROM drive motor 300 of the above-mentioned forced draft fan 30 of certain temperature range for the inner space of the body A by Figure 10, and motor drive circuit 231 is drive circuits of the CD-ROM drive motor 106B of the forced draft fan 106 being arranged at discharge duct 14.
(temperature sensing circuit)
In fig. 22, the temperature detection information from following each detector unit is transfused to temperature sensing circuit 240.
(1) the detector unit 31R of the substantial middle of right IH heater coil 6RC is located at.
(2) the detector unit 31L of the central portion of left IH heater coil 6LC is located at.
(3) be located at radiant type central authorities electrical-heating source 7 electric heater near detector unit 241.
(4) detector unit 242 of the storehouse temperature detection of grid heating chamber 9.
(5) detector unit 243 of the vicinity of synthetic display parts 100 is arranged at.
(6) be installed on 2 radiating fins 43A, 43B of the inside of component shell 34 closely, individually detect the detector unit 244,245 of the temperature of above-mentioned 2 radiating fins.
In addition, also detector unit can be arranged more than 2 positions relative to temperature detection object.Such as also the temperature sensor 31R of right IH heating source 6R can being located at central portion and the outer peripheral portion of this right IH heater coil 6RC, controlling for realizing temperature more exactly.Can also by make use of the element of different principles to form detector unit.Can be also such as infrared mode for the detector unit of the central portion of right IH heater coil 6RC, the detector unit being located at outer peripheral portion be thermistor-type.
Control circuit 200 is according to the temperature survey situation from temperature sensing circuit 240, all the time control the motor drive circuit 33 of the CD-ROM drive motor 300 of forced draft fan 30 and forced draft fan 30 is operated, thus utilize wind to cool, be divided into the above high temperature of set point of temperature to prevent respective Temperature measuring section.
The said temperature detecting element 31L being located at the central portion of above-mentioned left IH heater coil 6LC is made up of 5 detector unit 31L1 ~ 31L5, but relevant this detector unit 31L explains later.
(secondary heater coil)
In Figure 18 and Figure 20,2 times of the outer coil 6LC1 of left IH heater coil 6LC to be the maximum outside diameter with central point X1 be DA(=radius R 1) the coil of ring-type, inner coil 6LC2 is the coil being wound on the inner side of outer coil 6LC1 across space 270 in the form of a ring, has identical central point X1.Main heater coil MC is formed by two annuluses be positioned on such concentric circles.
4 secondary heater coil SC1 ~ SC4 keep the ground, space 271 of regulation to be configured in the outer peripheral face of above-mentioned main heater coil MC, as shown in figure 20, circumferentially bend along the same of radius R 2 centered by above-mentioned central point X1, and configure dispersedly at substantially equal intervals mutually, its outer shape is Long Circle bending as shown in Figure 18, Figure 20 or ellipse.This secondary heater coil SC1 ~ SC4 also twists reel 1 or many these assembly lines, and is restrained by contained part partly, or entirety is solidified to form by heat-resistant resin etc., makes outer shape become Long Circle and ellipse.
Above-mentioned 4 secondary heater coil SC1 ~ SC4 as shown in figure 20, on the circle apart from central point X1 radius R 3, the ground, space 273 of mutual maintenance certain size is configured, and the circumference of this radius R 3 is just in time consistent with the center line of the length direction of each secondary heater coil SC1 ~ SC4.In other words, around the main heater coil MC of the ring-type of a formation closed circuit, the circular arc of the radius R 2 specified with the central point X1 drawn apart from this main heater coil MC is formed in the mode of inner side (side right with the outer peripheral face of main heater coil MC), be configured with 4 secondary heater coil SC1 ~ SC4, utilize the radius of curvature along above-mentioned circular arc, above-mentioned assembly line bends while extend, and forms electric closed circuit.
The height dimension (thickness) of main heater coil MC is identical with the height dimension (thickness) of each secondary heater coil SC1 ~ SC4, and main heater coil MC and each secondary heater coil SC1 ~ SC4 is horizontally set and is fixed on coil supports body 290 described later, become same size with the interval in opposite directions of the upper surface and above-mentioned top board 21 lower surface that make them.
Straight line Q1 shown in Figure 18 is the secondary heater coil SC1 ~ SC4 of link 4, the bending edge of inner side, be in other words one end RA(of bending circular arc in other words, be starting point) with the straight line of central point X1.In the same manner, straight line Q2 be link secondary heater coil SC1 ~ SC4, circular arc other end RB(in other words, be terminal) with the straight line of central point X1.From the view point of the efficiency of heating surface, between these 2 end RA and end RB (between starting point and terminal) length, be namely greatly preferred along the outer peripheral face of main heater coil MC with the length of bending (the secondary heater coil SC's) circular arc of radius R 2.This is because, as described later, manage high-frequency current is flowed with identical direction with between secondary heater coil SC1 ~ SC4 in the outer peripheral edges of main heater coil MC, interfere to reduce magnetic.
, in reality, because between adjacent 2 secondary heater coil SC1 ~ SC4, the direction of high-frequency current is contrary, so the impact therefore produced becomes problem.In order to suppress this impact, be separated by a distance in (space 273 described later).Therefore, the length of circular arc has certain limit.Specifically, in the structure shown in Figure 18, Figure 20, become space 271 hypothesis of the electric insulation distance between main heater coil MC and secondary heater coil SC1 ~ SC4 when being 5mm, because the external diameter of main heater coil MC is the 2 times=180mm of R1, so the length of the circumference of R2=180mm+5mm+5mm=190mm, R2 is the 190mm × circumference ratio 3.14 of roughly 596.6mm(=diameter R2).Thus, when configuring 4 to secondary heater coil SC1 ~ SC4 equalization (each 90 degree of angle), the length of 1/4th is 149.15mm.The angle be made up of Q1 and Q2 is not 90 degree, such as, be 60 degree ~ 75 degree.Therefore, when 70 degree, above-mentioned 149.15mm becomes roughly 116mm by the formula of ratio (the roughly 0.778) × 149.15mm of 70 degree of ÷ 90 degree.That is, the length of the circular arc of inner side of each secondary heater coil SC1 ~ SC4 is roughly 116mm.
In addition, when as this execution mode 2, secondary heater coil SC is 4, because within the surrounding 360 degree of main heater coil MC, the scope of 280 degree (=above-mentioned 70 degree 4 times) is along bending (the secondary heater coil SC's) circular arc of the outer peripheral face (with radius of curvature R 2) of main heater coil MC, so about 77.8%(=280 degree ÷ 360 degree) scope (this ratio is called " matching rate " in the following description) in, the direction of main heater coil MC outer peripheral edges and secondary heater coil SC1 ~ SC4 inner peripheral coupling (walking abreast).This means between main heater coil MC and secondary heater coil SC1 ~ SC4, the degree that high-frequency current IA, IB can be made to flow to identical direction is large, reduces magnetic and interferes and improve the magnetic flux density relative to heating object N, contribute to improving the efficiency of heating surface.
Figure 18, Figure 20, in order to make explanation easy understand, do not draw the size of each component parts such as main heater coil MC and secondary heater coil SC1 ~ SC4 with engineer's scale.Matching rate is larger, and high-frequency current more flows to identical direction, from the view point of the efficiency of heating surface, the length improved mutually in the adjacent region magnetic flux density of 2 heater coils is greatly comparatively understood, but in fact in order to ensure above-mentioned space 273, there is the limit, cannot 100% be become.
In addition, in fig. 20, because the size of diameter R3 is the average transverse width W1 of the assembly line entirety of the side of R2+(2 × adjacent with the main heater coil MC of secondary heater coil SC)+(the average transverse width W2 of the assembly line entirety in the outside of 2 × secondary heater coil SC), so at W1=15mm, during W2=15mm, R3 is 250mm(=190mm+30mm+30mm).Space 271 is not the 5mm of above-mentioned minimum dimension, such as, can be 10mm yet.Space is to ensure insulating properties between two objects that the main heater coil MC that is powered from different power supplys respectively and secondary heater coil SC1 ~ SC4 is such and the insulating space of necessity, but in order to interdict between main heater coil MC and secondary heater coil SC1 ~ SC4, as long as the electric insulation such as porcelain, heat-resistant plastic is such as formed as thin tabular and sandwiched, just can improve the electrical insulating property in space 271, reduce the size in space 271 further.
Further, as shown in figure 18, be configured to maximum outside diameter is DB to 4 these secondary heater coil SC1 ~ SC4.As described in Figure 19, above-mentioned outer coil 6LC1 and inner coil 6LC2 is connected in series.Thus, outer coil 6LC1 and inner coil 6LC2 is energized simultaneously.
Because each secondary heater coil SC1 ~ SC4 is not positive circle, so in order to easy manufacture, such as also can be divided into 2 layers up and down, namely 1 or many assembly lines are twisted in the shape of a spiral on one side, while identical 2 coils of winding flat shape, and be wound into Long Circle or ellipse, line carried out to above-mentioned 2 coils and is connected in series, be formed as coil single on electrically, this assembly line is bundled into wire harness by the fine rule (wire rod) about 30 with the diameter of about 0.1mm ~ 0.3mm and forms.In addition, in order to improve the Magnetic driving power of identical unit plane area compared with main heater coil MC, even and if the area of plane is little also exports high output, also can use the wire rod thinner than the wire rod of main coil MC.
Space (cavity) 272 is spontaneous when forming secondary heater coil SC1 ~ SC4.That is, if assembly line is reeled to a direction, then must be formed.When this space 272 is used in and itself carries out air cooling to secondary heater coil SC1 ~ SC4, the air cooling air supplied from above-mentioned forced draft fan 30 is risen by this space 272.Coil supports body 290 is integrally formed by the non-metallic material that heat-resistant plastic etc. is such, and 8 arm 290B radially extend from central point X1, and becomes and link the round-shaped of most peripheral edge 290C.
When keeping infrared ray sensor 31L1 ~ 31L5 respectively, by 5 support 290D1 ~ 290D5 one or be arranged on arm 290B upper surface or side (with reference to Figure 18, Figure 21) with being formed as different component.Supporting jut 290A be integrally formed in 8 the arm 290B radially extended, with faced by middle body 4 arm 290B of secondary heater coil SC1 ~ SC4, respectively disperse 3 ground to arrange at 4 positions, wherein 1 is placed among the space 272 of above-mentioned secondary heater coil SC1 ~ SC4, one in remaining 2 is configured in than the position of secondary heater coil SC1 ~ SC4 by central point X1, and another is configured in outside on the contrary.
Each 2 of supporting tongue 290E is formed on and 4 arm 290B faced by the both ends of secondary heater coil SC1 ~ SC4, be placed with the both ends of secondary heater coil SC1 ~ SC4 thereon, and be placed with the central portion of secondary heater coil SC1 ~ SC4 at the upper surface of other 2 arm 290B.
Each 1 of cylindric fixed part 290F gives prominence to the upper surface being formed in all above-mentioned supporting tongue 290E integratedly, when this fixed part 290F arranges secondary heater coil SC1 ~ SC4, is positioned in the position corresponding with the end positions in this space 272.Utilize fixed part 290F and above-mentioned supporting jut 290A, the space 272 of the central part of secondary heater coil SC1 ~ SC4 and 3 positions of inner side and outer fix limited, so can not be out of shape because of the power (as representational example, in figure 21 with arrow mark FU and FI that chain-dotted line represents) of the expansion along with casual traversing dynamic and heating etc.
In addition, why utilization supporting jut 290A and fixed part 290F is connected to the inner side of secondary heater coil SC1 ~ SC4 and surrounding and restriction site partly, do not form complete cycle throughout this coil around such wall (also referred to as rib), be the inner side in order to open as far as possible secondary heater coil SC1 ~ SC4 and surrounding, become the path of tempering air.
Coil supports body 290 is as shown in Figure 21 and Figure 26, be positioned in the upper surface of the upper shell 42A of cooling pipe 42, the cooling air cooling sprayed upward by the squit hole 42C from cooling pipe 42, and the main heater coil MC of the side of being located thereon and secondary heater coil SC1 ~ SC4 is cooled, to prevent because heating becomes abnormal high temperature.Therefore, the roughly overall of above-mentioned coil supports body 290 becomes the clathrate (with reference to Figure 21) can guaranteeing aeration, and the above-mentioned flux leakage radially configured from central point X1 prevents material 73 from becoming the shape of the path of this wind transversal partly.In addition, the bottom surface of secondary heater coil SC1 ~ SC4, except the such part of the part in opposite directions of arm 290B and supporting tongue 290E, is also the state exposed, so due to the existence of this exposed portion, radiating effect improves.
Above-mentioned flux leakage prevents material 73 from becoming from above-mentioned central point X1 the lower surface being installed in above-mentioned coil supports body 290 radially.Space 273 as shown in figure 20, be in order to adjacent secondary heater coil SC1 ~ SC4 each other by simultaneously through-flow time, the high-frequency current IB flowed in secondary heater coil SC1 ~ SC4 that this is adjacent is identical direction, the end of adjacent secondary heater coil SC1 ~ SC4 each other not magnetic interfere and to arrange.Namely, at the main heater coil MC relative to ring-type, such as, when observing to flow driving electric current counterclockwise from upper surface, if relative to secondary heater coil SC1 ~ SC4 to flow driving electric current clockwise, then flow through the direction of the high-frequency current IA of main heater coil MC and flow through the side close to main heater coil MC of secondary heater coil SC1 ~ SC4, the direction of the electric current I B of namely adjacent side is identical as shown in Figure 20, but due in secondary heater coil SC1 ~ SC4, adjacent each other between end, the direction of high-frequency current IB becomes contrary mutually, interfere so seek to reduce consequent magnetic.
In addition, also can relative to main heater coil MC, such as observe to during flow driving electric current clockwise from upper surface, with the direction of specific time interval alternately to rightabout switch current, to make relative to secondary heater coil SC1 ~ SC4 to flow driving electric current counterclockwise, flow driving electric current clockwise afterwards.
Preferably, the size in space 273 with each other, the end of this secondary heater coil SC1 ~ SC4 is larger than above-mentioned space 271.In addition, in figure 18, owing to not being the figure of the product size representing reality exactly, so directly cannot read from accompanying drawing, but preferably, the space (cavity) 272 of above-mentioned secondary heater coil SC1 ~ SC4, by the transversal dimensions on the straight line of central point X1, namely large than above-mentioned space 271 with transverse width dimension such shown in arrow mark in Figure 18.This is because the electric current flowing through secondary heater coil SC1 ~ SC4 is mutual rightabout each other, interferes so reduce consequent magnetic.In contrast, due to space 271 collaborative heating by magnetic coupling, so interval also can be narrow.
(separate radiation portion)
In Figure 18, Figure 20, Figure 22 and Figure 26, separate radiation portion 276 be scattered in identical with above-mentioned main heater coil MC concentric circularly at the luminous element that 4 positions are arranged.This separate radiation portion 276 is driven by the drive circuit 278 shown in Figure 22, comprises and uses bulb or organic EL, LED(light-emitting diode) etc. light source (not shown) and guiding from the light conductor of the light of this light source incidence.
As light conductor, it can be the material that synthetic resin or the glass etc. such as acrylic resin, Merlon, polyamide, polyimides are transparent.The upper surface of light conductor as shown in figure 26, towards the lower surface of top board 21, as in Figure 26 with as shown in chain-dotted line, from the light of light source from the upper surface of light conductor by radiation.In addition, about such luminous element making lines luminescence relative to upper direction, such as, proposed by No. 3941812nd, Japan Patent.By separate radiation portion 276 luminescence, light, can know whether above-mentioned secondary heater coil SC1 ~ SC4 carries out induction heating action.
(on a large scale illuminating part)
Again get back in Figure 18, Figure 20, Figure 22 and Figure 26, illuminating part 277 is present in and the mode on above-mentioned separate radiation portion 276 concentric circles on a large scale, the ground, space 275 being separated with regulation around separate radiation portion 276 outside, maximum outside diameter size is the luminous element of the ring-type of DC.This on a large scale illuminating part 277 driven by drive circuit 278 as shown in figure 22, identical with above-mentioned separate radiation portion 276, comprise light source (not shown) and guide from the light conductor of the light of this light source incidence.
This on a large scale illuminating part 277 light conductor upper surface as shown in figure 26, towards the lower surface of top board 21, as in Figure 26 with as shown in chain-dotted line, from the light of light source from the upper surface of light conductor by radiation, so by this on a large scale illuminating part 277 luminous, light, the outer edge of the group of above-mentioned secondary heater coil SC1 ~ SC4 and main heater coil MC can be differentiated.
As being shown in the position of leader label 6LM of circle of top board 21 and the position in above-mentioned separate radiation portion 276 and inconsistent.
This is because the position of leader label 6LM is roughly corresponding with the outside dimension DA of main heater coil MC, but separate radiation portion 276 surrounds the such size of secondary heater coil SC1 ~ SC4.In addition, the position being shown in the collaborative heating region mark EM of the circle of top board 21 is unanimous on the whole with the position of illuminating part 277 on a large scale, but collaborative heating region mark EM is formed at the upper surface of top board 21 usually by printing etc., so consider the tunicle (using hardly through the material of luminous ray) of its printing and application, be configured to the outer fix at only a few about mm, the upper surface of illuminating part 277 is close in opposite directions on a large scale.In addition, if guarantee the light transmission of collaborative heating region mark EM, then also can be completely the same.
(infrared ray sensor configuration)
As shown in figure 18, above-mentioned infrared ray sensor 31L is made up of these 5 infrared ray sensors of 31L1 ~ 31L5, and wherein, infrared ray sensor 31L1 is arranged in above-mentioned space 270.This temperature sensor 31L1 detects by the temperature of the heating object N such as the pot that is positioned on main heater coil MC.In the outside of this main heater coil MC, be configured with the infrared ray sensor 31L2 ~ 31L5 of each secondary heater coil SC1 ~ SC4 respectively, these infrared ray sensors are all arranged among the supporting jut 290A of the overshooting shape being formed at above-mentioned coil supports body 290.
In addition, in order to play the function of heating object mounting judging part 280, namely determining whether that the function being placed with heating object N also can not use above-mentioned infrared ray sensor 31L2 ~ 31L5, parts instead, having optical detection part (optical sensor).This is because optical detection part can differentiate that the natural only no tops from top board 21 such as the light of indoor illumination or sunray arrive.When not being placed with heating object N, be positioned at the interference light of optical detection part by sensing chamber's intraoral illumination etc. of the below of this heating object N, can as the judgement information not being placed with the objects such as pot.
From each temperature sensor 31R, 31L, 241,242,244, the temperature data of 245, be sent to circuit for controlling electricity turning 200 via temperature sensing circuit 240, but be transfused to above-mentioned heating object mounting judging part 280 about the temperature detection data of the infrared ray sensor (referring to that 31L1 ~ 31L5 these 5 is whole) of heater coil 6RC, 6LC.
Metal anti-magnet ring 291(is with reference to Figure 26) be the component of the outermost ring-type being arranged at coil supports body 290.Loud speaker 316 shown in Figure 22 is driven by the signal from speech synthesizing device 315.This speech synthesizing device 315 is the devices that sound can be utilized to report the various information shown by above-mentioned synthetic display parts 100, thermal power can be reported, perform the title of the heating source in heating action (such as, left IH heating source 6L), cook the elapsed time started, the remaining time of timer setting, various detected temperatures, be shown in the reference information of the various cookings of guidance field (100GD), the information such as abnormal running and the incorrect operation of user detected, also comprise and can carry out the such information of the various cooking with preferred as far as possible state and heating location (comprising the position of heating object N).Also comprise in main heater coil MC described later and secondary heater coil SC which side in fact perform and heat the such information of action.
(action of heating device)
Then, illustrate centered by Figure 22 by the summary of the action of the heating device of above-mentioned Structure composing.
Elemental motion program from switching on power to the cooking prepares is stored in the storage part 203(of the inside being positioned at circuit for controlling electricity turning 200 with reference to Figure 22).
First attaching plug is connected with the source power supply of 200V by user, presses the action button 63A(of main power switch 63 with reference to Figure 11), switch on power.
So via constant voltage circuit (not shown), the low supply voltage of regulation supplies to circuit for controlling electricity turning 200, and circuit for controlling electricity turning 200 starts.The control program of circuit for controlling electricity turning 200 self is utilized to carry out autodiagnosis, when not having abnormal, for driving the motor drive circuit 33 of the CD-ROM drive motor 300 of forced draft fan 30 by predrive.In addition, the drive circuit 215 of the liquid crystal display part of left IH heating source 6L and right IH heating source 6R, synthetic display parts 100 is also pre-respectively starts.
The temperature sensing circuit 240 of Figure 22 reads by each detector unit (temperature sensor) 31R, 31L(otherwise expresses especially, in the following description, refer to and comprise the whole situation of 31L1 ~ 31L5 these 5), the temperature data that detects of detector unit 241,242,244,245, and carry this data to circuit for controlling electricity turning 200.
As above, because collect the data such as circuital current, voltage, temperature having main component part in circuit for controlling electricity turning 200, so circuit for controlling electricity turning 200 controls as the anomaly monitoring before the cooking, carry out exception and heat judgement.Such as, when the temperature of the crystal liquid substrate periphery of synthetic display parts 100 is higher than the heat resisting temperature (such as 70 DEG C) of this liquid crystal display substrate, circuit for controlling electricity turning 200 is judged to be abnormal high temperature.
In addition, the current detection sensor 227 of Figure 22 detects the electric current of flowing in the resonant circuit 225 be made up of the parallel circuits of right IH heater coil 6RC and resonating capacitor 224, and the input part 201 that this detection exports to circuit for controlling electricity turning 200 supplies.Circuit for controlling electricity turning 200 by the detection electric current of the current detection sensor achieved be stored in storage part 203 determinating reference data standard current value compared with, when too little current or super-high-current being detected, circuit for controlling electricity turning 200 is judged to be the exception because some fault or poor flow etc. cause.
When utilizing above autodiagnosis step there is no abnormality juding, become " cooking starts to be ready to complete ".But, when having carried out abnormality juding, having processed when carrying out the exception specified, cannot start to cook (left IH heater coil 6LC carries out abnormality detection similarly).
When there is no abnormality juding, demonstrate at each heating source corresponding region 100L1,100L2,100M1,100M2,100R1,100R2,100G of synthetic display parts 100 and can add thermally operated content, at the heating source selecting to wish and induction heating, be shown as on leader label 6LM, 6RM, 7M of the heating object N such as pot being placed on by the heating source of the hope of drawing in top board 21 (speech synthesizing device 315 linking such with synthetic display parts 100 utilizes sound to urge user to carry out such operation simultaneously).In addition, simultaneously send instruction by circuit for controlling electricity turning 200, with make all separate radiation portions 276 and on a large scale illuminating part 277 also with the color of regulation (such as yellow.Hereinafter referred to as " mode 1 ") light luminous, light.
Then, as described above, with reference to Figure 31 on one side specification exception has judged afterwards until the main control action of entirety that is ready to complete of cooking.
First after the main power source is turned, when user is prepared by operating portion (not shown) instruction heating action, load judging part 280 by above-mentioned heating object and infer whether be placed with heating object N above main heater coil MC and secondary heater coil SC1 ~ SC4 coil separately, or whether the bottom area of heating object N is larger than setting, this inferred results is passed on to the circuit for controlling electricity turning 200 as control part, and the heat treated or the heat treated carrying out being suitable for ordinary pan etc. (step MS11) that are suitable for large footpath pot are carried out in decision.
Though when be applicable pot be general size pot or pannikin or be not suitable for heating etc., carry out the process different from large footpath pot.
Circuit for controlling electricity turning 200 makes the liquid crystal display picture of the synthetic display parts 100 be arranged near operating portion E show, and urges the cooking menu (MS12) of selecting to wish.
Selected by operating portion when user, when have input cooking menu, thermal power, cooking length of time etc. (MS13), start to carry out formal induction heating action (MS14).
As the cooking menu being shown in display unit G, identical with execution mode 1 be " heated at high speed ", " fried ", " heating up water ", " preheating ", " cooking ", " scald and boil ", " heat up water+be incubated " these 7.
When user have selected any one among these 7 cooking menus, the control model corresponding with these menus is automatically selected by the plug-in of circuit for controlling electricity turning 200, sets main heater coil MC, secondary heater coil SC1 ~ SC4 could be energized and turn on angle (thermal power), conduction time etc. separately.According to cooking menu, carry out the display (MS15) of urging user to set arbitrary thermal power and conduction time etc. at display part.
By above operation, to being ready to complete of the cooking operation transfer being object with large footpath pot, after selecting cooking menu, promptly start induction heating action.In addition, the situation of " ordinary pan " or " small-sized pot " is also substantially identical with above-mentioned steps MS12 ~ MS15.When " ordinary pan " or " small-sized pot ", also in synthetic display parts 100, as shown in Figure 28 7 cooking menus are shown as cooking menu, but when " ordinary pan " or " small-sized pot ", because preferably only utilize the main heater coil MC of central part to heat in 2, so control content (thermal power, energising type etc.) have relatively big difference.Certainly, because cannot individually to the whole of secondary heater coil SC1 ~ SC4 or its a part of heat driven, so do not utilize the heating type of secondary heater coil SC1 ~ SC4.That is, do not implement to utilize the convection current of secondary heater coil SC1 ~ SC4 to promote to control.
(cooking operation)
Then, about the situation to the transfer of cooking operation, to use the situation of right IH heating source 6R to be described with " ordinary pan or small-sized pot ".In addition, so-called small-sized pot, preferably refers to that diameter is less than the pot of 10cm in 2.
The method of right IH heating source 6R is used to have the situation using previous action portion 60 and the situation these two kinds using upper surface operating portion 61.
(cooking in previous action portion starts)
First, to using the situation in previous action portion 60 to be described.
User at first by the right operation scale 64R in previous action portion 60 to the right or turn left dynamic (amount according to rotating sets thermal power).
Front lower due to the previous action framework 62 in previous action portion 60 is provided with not shown 3 independently timer scales, so the timer of right IH heating source 6R is wherein set as the stipulated time by user.Thus, such operation signal is transfused to circuit for controlling electricity turning 200, is set the cooking conditions such as thermal power grade, heating time by circuit for controlling electricity turning 200.
Then, circuit for controlling electricity turning 200 drives drive circuit 228, and drives right IH heating source circuit 210R(with reference to Figure 20).In addition, because synthetic display parts 100 are driven by drive circuit 215, so in cooking conditions such as the display of its viewing area thermal power, cooking length of time etc.Because the gate pole of drive circuit 228 couples of IGBT225 applies driving voltage, so the high-frequency current that flows in right IH heater coil 6RC.But, from from the beginning of not carrying out higher calorific power heating energising, as following, carry out the whether suitable detection of the heating object N such as pot.
Current detection sensor 227 detects the electric current flowed in the resonant circuit be made up of the parallel circuits of right IH heater coil 6RC and resonating capacitor 224, detects the input part exporting and be supplied to circuit for controlling electricity turning 200.Further, due to some fault, poor flow etc., when to detect with the current value ratio of standard compared with too little current or super-high-current, circuit for controlling electricity turning 200 is judged to be exception.Circuit for controlling electricity turning 200, except having the abnormality juding function of kind as described above, also has the function judging that whether the size of the pot (heating object N) used is suitable.
Specifically, at resonant circuit 225, not the thermal power (electric power) that user sets between initial several seconds, and flow through regulation electric power (such as 1KW), detect input current value now with current detection sensor 227.
Namely, following situation is known: when the electric power that circuit for controlling electricity turning 200 utilization specifies drives the IGBT225 becoming switch block with identical conducting ratio output drive signal, if the pot (heating object N) of the diameter less than the area of right IH heater coil 6RC is positioned on top board 21, the electric current then flowing through the part of current detection sensor 227 and the pot (heating object N) at the diameter larger than the area of heater coil 220, by compared with the electric current of the part of the dirty overcurrent detecting sensor 227 of situation that is positioned on top board 21, are little.
Thus, experimentally result etc. in advance, by the value flowing through the electric current of the part of current detection sensor 227 when too small for mounting pot (heating object N), prepares as determinating reference data.So, when too small electric current being detected in current detection sensor 227, can be judged to be it is abnormal occupation mode by circuit for controlling electricity turning 200, so move to the process path of abnormality processing.
In addition, even the thermal power of user's setting, such as in person change the current on time relative to switch block 225 by circuit for controlling electricity turning 200, and conducting ratio is reduced to permissible range and can maintains when guaranteeing normal heated condition, also the process of electric power suitable solution is automatically performed, when little current value being detected, and not exclusively without exception and unconditionally carry out abnormality processing.
When carrying out the judgement of pot as described above (heating object N), at the viewing area 100R2 of right IH heating source 6R, the word of initial display " pot suitably whether judge in ".Then, after several seconds, the result of determination monitoring process is detected according to above-mentioned abnormal current, when being judged to be too small pot (heating object N), show the such word aroused attention of " pot of use is too small ", " larger pot (more than diameter 10cm) please be use " at viewing area 100R2.
When outputing this pot of whether suitable result of determination, the area of viewing area 100R1,100R2 of right IH heating source 6R expands several times from the state of Figure 27, is unsuitable in this viewing area display pot (heating object N).When left IH heating source 6L and radiant type central authorities' electrical-heating source 7 liang of Fang Jun is not used, such as shown in figure 28, the extended size such to viewing area 100L1,100L2,100M1,100M2 of comprising above-mentioned left IH heating source 6L and radiant type central authorities electrical-heating source 7 of viewing area 100R1,100R2 of right IH heating source 6R.In addition, Figure 28 is that right IH heating source 6R and central heating source 7 are not used, and only uses the situation of left IH heating source 6L.
Afterwards, when not carrying out the measures such as the exchange of pot (heating object N) when user, after not stopping the certain hour of circuit for controlling electricity turning 200 ground from too small at viewing area E display pot (heating object N), temporarily automatically stop the heating action of right IH heating source 6R.
If pot (heating object N) is changed to large pot by user, as long as then again carry out cooking the operation started, the cooking just again can be restarted.
Detect action carrying out pot as described above (heating object N), when being judged to be applicable pot (heating object N), circuit for controlling electricity turning 200 automatically performs the energising control treatment of adaptation, to play the original setting thermal power of right IH heating source 6R.Thus, utilize the high frequency magnetic flux from right IH heater coil 6RC, the heating object N such as pot become high temperature, enter electromagnetic induction heating cooking action (cooking mode).
The direct current utilizing rectifier circuit 221 and smoothing capacitor 223 to obtain is transfused to the collector electrode of the IGBT225 as switch element.By carrying out the drive singal of driving circuit 228 to the base stage input of IGBT225, the on-off carrying out IGBT225 controls.By combining on-off control and the resonating capacitor 224 of IGBT225, right IH heater coil 6RC is made to produce high-frequency current, utilize the electromagnetic induction effect that this high-frequency current brings, in by heating object N such as the pots on the top board 21 that is positioned in above right IH heater coil 6RC, produce vortex flow.Like this, the vortex flow that heating object N produces becomes Joule heat, and heating object N generates heat, and can be used for the cooking.
Drive circuit 228 has oscillating circuit, and the drive singal that this oscillating circuit produces is supplied to the base stage of IGBT225, carries out on-off control to IGBT225.By adjusting frequency of oscillation and vibration opportunity of the oscillating circuit of drive circuit 228, adjust conduction ratio and conducting opportunity, the power frequency etc. of right IH heater coil 6RC, the thermal power that can realize right IH heater coil 6RC regulates.In addition, when the drive circuit of main heater coil MC employs full-bridge circuit, each drive circuit 228A, 228B shown in Figure 23 play the effect identical with above-mentioned drive circuit 228.
In addition, when outputing the energising halt instruction of right IH heating source 6R, the energising of right IH heating source 6R is stopped, but forced draft fan 30 stops also remaining in operation for latter 2 minutes ~ 5 minutes in above-mentioned energising.Thus, after the air-supply from forced draft fan 30 has just stopped, hot gas has still been trapped in the right IH heater coil 6RC periphery of right IH heating source 6R, overshoot (overshoot) problem rising such with can also preventing high temperature.In addition, can also prevent the temperature of synthetic display parts 100 from uprising such evils.This remain in operation the time with until the condition such as running thermal power size of the situation that rises of the temperature that stops of being energized and indoor air temperature, heating source is corresponding, the formula predetermined by circuit for controlling electricity turning 200 and numerical tabular are determined.
But, when detect from forced draft fan 30 abnormal current etc., distinguish be the fault of cooling fan itself (such as, when only the temperature of cold sink 43A, 43B rises), the energising of this forced draft fan 30 is also stopped simultaneously.
The liquid crystal display substrate of synthetic display parts 100 by during cooking from left and right IH heating source 6L, 6R by the reverberation of the bottom of heating object N that heats with heat from the radiant heat of top board 21.
In addition, when sky bran sieve pot (heating object N) of used high temperature is positioned on the central portion of top board 21, the heat of the pot (heating object N) from this high temperature (about 200 DEG C) is also accepted.
Therefore, preferably in 1, in order to suppress the temperature of synthetic display parts 100 to rise, forced draft fan 30 is utilized to carry out air cooling from the left and right sides.
Under normal operating conditions in this wise in the driven situation of forced draft fan 30, the extraneous air of body 1 as shown in Figure 12, is inhaled into the inside of fan drum 37 from the suction inlet 37B of the suction cylinder 37A of fan drum 37.The air be inhaled into forwards is discharged from exhaust outlet (outlet) 37C by the alar part 30F that High Rotation Speed in the horizontal direction in the inside of fan drum 37.
In the anterior position of exhaust outlet 37C, there is the component shell 34 that state is in snapping-like connected to fan drum 37, make air induction port in snapping-like state be communicated in this exhaust outlet 37C, so air is sent into from exhaust outlet 37C to the inside of component shell 34 by forced draft fan 30, rise to make the air pressure inside (static pressure) of this component shell 34.The part of the cooling air of this feeding discharges air from the 1st exhaust outlet 34A of the side close to exhaust outlet 37C of the upper surface part being positioned at component shell 34.
The temperature of this air be discharged because midway uncolled high temperature heater, heat generation electric member etc., so the temperature after just having discharged with from exhaust outlet 37C is almost identical, be still ozone.
And, the tempering air of the airspace 42F of cooling pipe is sent to from the 1st exhaust outlet 34A, spray upward as shown in the arrow mark Y3 of Figure 14, Figure 16 from squit hole 42C, collide with the lower surface of right IH heater coil 6RC directly over being positioned at, effectively cool this coil.In addition, when the shape local of right IH heater coil 6RC has the space making air cooling air as described above run through, the cooling air from the 1st exhaust outlet 34A flows and cools with also running through this space.
On the other hand, be admitted to the inside of component shell 34 by forced draft fan 30 cooling air with remain pressure is not towards the surface of circuit substrate 41 and do not flow near surface.Cooling air protrudes from centered by the part of radiating fin 43A, 43B of the structure on the surface (side) of circuit substrate 41 to become, by multiple heat-exchange fin interelement, so main cooling heat dissipation fin 43A, 43B.
In addition, by in the cooling air (the arrow mark Y2 of Figure 14) released from exhaust outlet 37C, as the main flow of fastest part, as as shown in arrow mark Y4, be that straight line shape forwards flows through from exhaust outlet 37C, in component shell 34, spray from the 2nd exhaust outlet 34B of most downstream side position of the flowing being positioned at cooling air.Because the 2nd exhaust outlet 34B has than the 1st exhaust outlet 34A aperture area of several times greatly, so the major part being pushed into the cooling air of component shell 34 from exhaust outlet 37C sprays from the 2nd exhaust outlet 34B.
Then, the cooling air sprayed be directed into cooling pipe 42 airspace 42G, 42H among, this most cooling air is from the multiple squit hole 42C of upper surface being formed in upper shell 42A, as sprayed as shown in arrow mark Y4, Y5 in Figure 16, collide with the lower surface of the right IH heater coil 6RC be positioned at directly over it, effectively cool this coil.
A part for cooling air in the airspace 42H being directed into cooling pipe 42, guided by anteriorly component shell 46, this front piece shell 46 contains various elec-tric-electronic component 56, with the respective light-emitting component (LED) etc. of thermal power during light representations induction heating cooking, right thermal power display lamp 101R and left thermal power display lamp 101L.Specifically, the cooling air of above-mentioned forced draft fan 30 enters the airspace 42H of cooling pipe 42 from the 2nd exhaust outlet 34B of above-mentioned component shell 34, from the ventilating opening 42K of cooling pipe 42 here by being formed accordingly with airspace 42H, and the mode entering to be close to is positioned at ventilating opening 46R, the 46L(of the lower pipeline 46A directly over this ventilating opening 42K with reference to Figure 14).
Thus, utilize the cooling air entering front piece shell 46, first from below liquid crystal display picture 45R is cooled, 45L(Figure 14 reference), and flow through in front piece shell 46 afterwards, last from breach 46C to the process that upper component room 10 is discharged, by cooling on-board components etc. successively, liquid crystal display picture 45R, 45L, synthetic display parts 100, load various elec-tric-electronic component installation base plate 56 and with the light-emitting component of the right thermal power display lamp 101R of thermal power during light representations induction heating cooking and left thermal power display lamp 101L etc. successively cooled air cooling.
Particularly, because the cooling air be directed in this front piece shell 46 is not the wind cooling left and right IH heater coil 6LC, 6RC of becoming high temperature when induction heating action, so its temperature is low, although the air quantity of cooling air is few, but cool constantly, rise effectively to suppress the temperature of liquid crystal display picture 45R, 45L and synthetic display parts 100 etc.
From the cooling air that the multiple squit hole 42C of cooling pipe 42 spray, as Figure 11, Figure 14 and as shown in Figure 15, flow as arrow mark Y5, Y6 towards rear in upper component room 10.The cooling air being discharged to upper component room 10 from breach 46C also confluxes with the flowing of this cooling air, by flowing to the rear part exhaust room 12 opened towards the outside at body A, be finally discharged as arrow mark Y9 from rear part exhaust room 12 (with reference to Figure 11).
(using upper surface operating portion to start the cooking)
Then, to using upper surface operating portion 61(with reference to Figure 12) situation be described.
Because circuit for controlling electricity turning 200 is started, the drive circuit 215(of the liquid crystal display part of synthetic display parts 100 is with reference to Figure 22) also started in advance, so show the enter key selecting all heating sources at the liquid crystal display part of synthetic display parts 100.Therefore, if press the enter key (in 143 ~ 145 shown in Figure 27 some for this key) of selection right IH heating source 6R wherein, the then corresponding region 100R(thermal power 100R1 of right IH heating source 6R of liquid crystal display part and the total 2 of time 100R2) area automatically extended, and each enter key 142 ~ 145 is shown according to each scene with switching input function in this condition, as long as so one by one operate this enter key be shown, the kind of the cooking just can be set (also referred to as cooking menu.Such as, heat up water, endure stewed, insulation etc.) and thermal power grade, heating time etc. cooking conditions.
Then, in the stage of cooking conditions setting hope, as shown in figure 27, enter key 146 shows " decision " such word, as long as so touch this enter key 146, just determine the input of cooking conditions.In addition, Figure 27 is the situation that have selected right IH heating source 6R.
Then, then as described above, circuit for controlling electricity turning 200 implements pot suitability determination processing, when being judged to be applicable pot (heating object N), circuit for controlling electricity turning 200 automatically performs the energising control treatment of adaptation to right IH heating source 6R, to play the setting thermal power of the regulation that user sets.Thus, utilize the high frequency magnetic flux from right IH heater coil 6RC, the pot of heating object N becomes high temperature, enters electromagnetic induction heating cooking action (cooking operation).
(the one touch type setting cooking)
At right thermal power setting operating portion 70, be provided with user and touch setting key portion 90 by means of only once pressing the list that just can set each thermal power of the thermal power of right IH heating source 6R simply, because comprise these 3 one-touch keies of weak thermal power key 91, middle thermal power key 92 and heat-flash power bond 93, so not via at least 1 menu screen being operated generation by enter key of above-mentioned synthetic display parts 100, as long as press weak thermal power key 91, middle thermal power key 92, heat-flash power bond 93 or 3kW key 94, just can by this 1 time operation input thermal power.In addition, the cooking employing left IH heating source 6L also can by starting with operation identical above.
(cooking of grid heating chamber starts)
Then, illustrate that the radiant type electrical-heating source 22 to grid heating chamber 9,23(are with reference to Figure 15) situation about being energized.This cooking also can be carried out in the cooking utilizing right IH heating source 6R and left IH heating source 6L, but in circuit for controlling electricity turning 200, be built-in with the limiting program enrolling interlock function, can not carry out with radiant type central authorities electrical-heating source 7 simultaneously.This is because the restriction of the rated electrical of cooking device entirety can be exceeded.
The method of the various cooking is started in grid heating chamber 9 inside, there are two kinds of following methods, that is, use the method being shown in the enter key of the liquid crystal display part of synthetic display parts 100 in upper surface operating portion 61 and press radiant type electrical-heating source 22,23 action button 95(with reference to Figure 27) method.
Even if utilize a certain method in these methods, also by radiant type electrical-heating source 22,23 simultaneously or be individually energized, the various cooking can be carried out in grid heating chamber 9 inside.Circuit for controlling electricity turning 200 accepts the information from temperature sensor 242, temperature-control circuit 240, control the energising of above-mentioned radiant type electrical-heating source 22,23, the target temperature set by circuit for controlling electricity turning 200 is in advance become to make the internal atmosphere temperature of grid heating chamber 9, and report this situation (also have and shown by synthetic display parts 100 and reported by speech synthesizing device 315) in the stage that have passed through the stipulated time from starting to cook, end of cooking.
Along with the cooking of radiant type electrical-heating source 22,23, produce the hot gas of high temperature in the inside of grid heating chamber 9.Therefore, the internal pressure of grid heating chamber 9 raises naturally, naturally rises discharge duct 14 from the exhaust outlet 9E at rear portion.In this process, utilize deodorizing catalyst 121, the malodorous elements in exhaust is decomposed, and this deodorizing catalyst 121 utilizes driving heater drive circuit 214 be energized by catalyst electric heater 121H and become high temperature.
On the other hand, owing to being provided with the axial fan 106 of auxiliary exhaust in the midway of discharge duct 14, so the hot gas come for rising in discharge duct 14, operate by making this forced draft fan 106, as with arrow mark Y7(with reference to Figure 15) as shown in the air of the inside of body A is blown into discharge duct 14, the high temperature air of grid heating chamber 9 is guided by this ozone, while temperature declines, from the upper end opening 14A of discharge duct 14, be vented as shown in arrow mark Y8.
Like this, utilize upper end opening 14A(from discharge duct 14 with reference to Figure 15) exhaust stream, the air in the rear part exhaust room 12 adjacent with this upper end opening 14A is also directed and be externally discharged.That is, the air of the air in the grid heating chamber 9 of body interior and the space 26 between horizontal interval plate 25, inside, upper component room 10 also together be discharged via rear part exhaust room 12.
Then, the action using left IH heating source 6L to carry out the situation of cooking is described.In addition, left IH heating source 6L is also identical with right IH heating source 6R, shift to cooking mode finishing to cook the rear of front anomaly monitoring process, in addition, use the method for left IH heating source 6L to have and use previous action portion 60(with reference to Figure 11) situation and use upper surface operating portion 61(with reference to Figure 10) situation these 2 kinds, but in the following description, when large footpath pot uses as heating object N, from to left IH heater coil 6LC(with reference to Figure 11) energising starts, the stage of cooking after starting is described.
Maximum outside diameter DA(Figure 18 reference when using the bottom of a pan diameter than main heater coil MC) 1 much bigger ellipse or rectangular pot (heating object N), in the heating device of present embodiment 2, have while heating this elliptoid heating object N with main heater coil MC, the such advantage of heating can be worked in coordination with secondary heater coil SC1 ~ SC4.
Such as, suppose to be across main heater coil MC and be positioned at the situation of elliptoid pot (heating object N) such on 1 secondary heater coil SC1 both sides on the right side of it.
When starting cooking with loading such elliptoid pot (heating object N), the temperature of elliptoid pot (heating object N) rises, but infrared ray sensor 31L1(Figure 18 reference of main heater coil MC) and the infrared ray sensor 31L2 both sides of secondary heater coil SC1 and other infrared ray sensor 31L3, 31L4, the light income of 31L5 compares, interference light (the light of room lighting, sunlight etc.) input few, demonstrate the phenomenon that temperature rising trend is such, so based on such information, above-mentioned heating object mounting judging part 280 it is determined that the presence of elliptoid pot (heating object N).
In addition, also each current sensor 267A ~ 267D(of the current sensor 227 of main heater coil MC and secondary heater coil SC1 ~ SC4 is utilized with reference to Figure 22), to above-mentioned heating object mounting judging part 280(with reference to Figure 22, Figure 25) input to judge whether load the Back ground Information of same heating object N up.By detecting curent change, above-mentioned heating object mounting judging part 280 detects the change of the impedance of main heater coil MC and secondary heater coil SC, driving loads the translation circuit MIV of main heater coil MC and each translation circuit SIV1 ~ SIV4 of secondary heater coil SC1 ~ SC4 of elliptoid pot (heating object N), make in 4 secondary heater coil SC1 ~ SC4, load flowing high-frequency current in the secondary heater coil (at least one) of elliptoid pot (heating object N), for other the secondary heater coil not loading elliptoid pot (heating object N), above-mentioned circuit for controlling electricity turning 200 sends command signal, to suppress or to stop high-frequency current.
Such as, when heating object mounting judging part 280 is judged as loading same elliptoid pot (heating object N) above main heater coil MC and 1 secondary heater coil SC1, circuit for controlling electricity turning 200 make main heater coil MC only with specific secondary heater coil SC1 action in linkage, according to the thermal power ratio predetermined, by respective translation circuit MIV, SIV1 to rising two heater coil supply high frequency electric power (this thermal power proportioning relevant, then explain).
Here, so-called " thermal power ratio ", refer to such as when user intends to utilize left IH heating source 6L to start with the cooking that the thermal power of 3kW carries out cooking, circuit for controlling electricity turning 200 distributes, main heater coil MC is made to be 2.4kW, when making secondary heater coil SC1 be 600W, the ratio of this 2.4KW and 600W.4:1 in the situation of this example.In addition, only be positioned at the separate radiation portion 276(of the outer fix of this secondary heater coil SC1 with reference to Figure 18, Figure 26) (following to the luminance of redness from the luminance (mode 1) of yellow, be called " mode 2 ") change, drive circuit 278(is with reference to Figure 22) drive separate radiation portion 276, the light source (red colored lamp, LED etc.) of the regulation that separate radiation portion 276 has is luminous, light, and yellow light source that is luminous, some light yellow so far extinguishes.Thus, only executory secondary heater coil SC1 is shown with the band of ruddiness, with can from the top visual identity of top board 21.The separate radiation portion 276 corresponding with other secondary heater coil stops luminescence.
This secondary heater coil SC1 monomer cannot be driven and carry out induction heating cooking, in addition, even if each monomer of other 3 secondary heater coil SC2, SC3, SC4 and combine them and also cannot carry out induction heating cooking.In other words, it is characterized in that, only in the driven situation of main heater coil MC, what be arranged in 4 secondary heater coil SC1, SC2, SC3, SC4 of its periphery appoints one or more just simultaneously by heat driven.But, when the heating object N covering large external diameter such above all 4 secondary heater coil SC1, SC2, SC3, SC4 is loaded, when implementing the pattern that convection current promotes, as described below, the Control Cooling of 4 secondary heater coils is driven to be prepared in the control program of circuit for controlling electricity turning 200.
When main heater coil MC is by heat driven, all or part of of secondary heater coil SC1, SC2, SC3, SC4 with the order of regulation and thermal power simultaneously by heat driven.
During main heater coil MC heat driven, secondary heater coil SC1, SC2, SC3, SC4 all or part of with regulation order and thermal power by heat driven.
Stipulated time before all or part of of secondary heater coil SC1, SC2, SC3, SC4 to be terminated by the heat driven of the main heater coil MC of heat driven (terminal stage of such as cooking) with the order of regulation and thermal power.
In addition, when carrying out so collaborative heating, circuit for controlling electricity turning 200 is according to the thermal power ratio predetermined, the translation circuit MIV special by above-mentioned two heater coils, SIV1 is only to main heater coil MC and specific secondary heater coil SC1 supply high frequency electric power, and perform heating action, so based on this information, circuit for controlling electricity turning 200 is to drive circuit 278(reference Figure 22) send driving instruction, in addition, separate radiation portion 276 adds luminescence thermally operated start time from collaborative as described above, so that executory secondary heater coil SC1 can be determined.
In addition, as the means representing collaborative heating, in present embodiment 2, separate radiation portion 276 passes through luminescence, lights and represent.That is, when separate radiation portion 276 is in the stage changing to red luminance (" mode 2 ") from the luminance (mode 1) of initial yellow, user can identify and enter collaborative heated condition.
In addition, may not be such representation, but utilize the liquid crystal display picture of synthetic display parts 100 directly to show with word.
In addition, because illuminating part 277(is with reference to Figure 18, Figure 20, Figure 26 on a large scale) press the action button 63A(of main power switch 63 from user with reference to Figure 11) and switch on power, the stage that abnormality juding completes rises, by drive circuit 278(with reference to Figure 22) drive, at first with Yellow luminous, light, so can from elliptoid pot (heating object N) is placed on left IH heating source 6L top stage, guide this mounting position to user.Start to add the thermally operated stage supplying heating High frequency power to main heater coil MC, circuit for controlling electricity turning 200 changes the glow color (such as yellow being changed to redness) of illuminating part 277 on a large scale.The luminescence of the yellow light sources (lamp and LED etc.) that illuminating part 277 on a large scale such as also can be stopped to have, to light, the red light source (lamp and LED etc.) making to be disposed adjacent with this light source that replaces starts luminescence, lights, and can also use polychromatic source (3 looks emitting led) and change glow color.
In addition, even if about elliptoid pot (heating object N) temporarily being lifted or moves left and right official hour t(several seconds ~ 10 second), circuit for controlling electricity turning 200 also maintains heating action, and do not make this luminescence of illuminating part 277 on a large scale, illuminating state alternatively, user is continued to represent the elliptoid pot of mounting (heating object N) and preferred position.Here, if lift elliptoid pot (heating object N) with exceeding the time t of afore mentioned rules, then heating object loads the judgement that judging part 280 carries out not having elliptoid pot (heating object N) such, and exports this situation to circuit for controlling electricity turning 200.Circuit for controlling electricity turning 200, based on the discriminant information from heating object mounting judging part 280, again until during loading elliptoid pot (heating object N), temporarily sends the instruction of the thermal power reducing or stop induction heating.In this case, maintain and the elliptoid pot of mounting (heating object N) and preferred position are represented to user, but also can make the luminescence of illuminating part 277 on a large scale, illuminating state (lighting color etc.) changes matchingly with thermal power.If under the state such as declined in thermal power, make it with orange luminescence, light, once stop thermal power, make its with Yellow luminous, light, just can report the state of thermal power together to user with the expression at position preferred in order to load.
In addition, when making elliptoid pot (heating object N) such as be moved to the left, heating object mounting judging part 280 is judged as loading same elliptoid pot (heating object N) above the secondary heater coil SC2 in main heater coil MC and left side, circuit for controlling electricity turning 200 is based on the discriminant information from heating object mounting judging part 280, only make main heater coil MC and be positioned at this action in linkage of specific secondary heater coil SC2 on the left of it, according to the thermal power ratio predetermined, to above-mentioned two heater coils by respective translation circuit MIV, SIV2 supply high frequency electric power.Then, secondary heater coil SC2 is to the left stopped to be energized, maintain the thermal power proportioning of executory " thermal power " (such as 3KW) and regulation (such as when for utilizing left IH heating source 6L to carry out the cooking of cooking with the thermal power of 3KW, because main heater coil MC is 2.4KW, secondary heater coil SC1 is 600W, so be 4:1) continue the cooking of original state.The such thermal power of this 3KW is continued to show with numeral and word by comprehensive display device 100.
In addition, secondary heater coil SC1 is helpless to collaborative heating, replaces, and participates in collaborative heating action, to special converter SIV2 supply high frequency electric power by another secondary heater coil SC2.Namely, at circuit for controlling electricity turning 200 based on the discriminant information from heating object mounting judging part 280, detect when being switched to secondary heater coil SC2 from secondary heater coil SC1, driving instruction is sent to drive circuit 278, indicate, make separate radiation portion 276 can determine to perform the secondary heater coil SC2 in collaborative heating action.That is, circuit for controlling electricity turning 200 makes drive circuit 278 drive separate radiation portion 276, only to make separate radiation portion 276 luminescence of outside (in figure 18 for the left side) position being positioned at this secondary heater coil SC2, to light.Therefore, the light source (red colored lamp, LED etc.) (mode 2) of the regulation that separate radiation portion 276 has is luminous, light, so far, the light source extinguishing of lighting red coloration luminous in the position close to secondary heater coil SC2.
In addition, the high-frequency current IA flowed in main heater coil MC and the direction of high-frequency current IB of flowing in secondary heater coil SC1 ~ SC4 are as represented with the arrow mark of solid line in Figure 20, from the view point of the efficiency of heating surface, becoming identical direction in adjacent side is preferably (in fig. 20, represent in main heater coil MC around counterclockwise, in 4 secondary heater coil SC1 ~ 4 clockwise, consistent situation).This is because, at the adjacent area of 2 independently coils in this wise, when electric current flows to equidirectional, the magnetic flux that this electric current produces is strengthened mutually, the magnetic flux density of interlinkage heating object N is increased, by more generating vortex flow in heating object bottom surface and can induction heating expeditiously.The loop (loop) be represented by dotted lines in fig. 22, be with the direction contrary with the flow direction of high-frequency current IA, the IB shown in Figure 20 flow these high-frequency currents when flux circuit.
Utilize this flux circuit, in the diapire face of heating object N, generate the vortex flow flowed to the direction contrary with above-mentioned high-frequency current, produce Joule heat.When main heater coil MC and secondary heater coil SC1 ~ SC4 is closely arranged, if electric current flows to mutual rightabout, the AC magnetic field then generated by both interferes with each other in its certain close regional extent, result, the vortex flow (electric current flowed in heating object N) generated by these main heater coil MC and secondary heater coil SC1 ~ SC4 cannot be increased, cannot increase with this vortex flow square proportionally become large caloric value., this also produces additional advantage on the contrary.Namely, at the adjacent area that magnetic flux density as described above improves, in order to magnetic flux density is suppressed lower, comprise main heater coil MC in plane and carry out working in coordination with and add the such large region of thermally operated one or more secondary heater coil SC1 ~ SC4, distribution equalization, the i.e. homogenizing of the magnetic flux of interlinkage heating object N can be made, when so large heating region is cooked, there is the advantage that Temperature Distribution equalization can be made such.
Thus, the present invention is in the heater coil MC region adjacent with secondary heater coil SC1 ~ SC4, adopt when specific cooking menu and electric current to be flowed such mode to mutual equidirectional, and according to different cooking menus, adopt on the contrary and make sense of current be the such switching action of rightabout.In addition, magnetic loop as shown in Figure 26, according to the direction of high-frequency current IA, IB of flowing in heater coil, determines the direction generated.
Then, the figure shown in Figure 31 ~ Figure 34 is the flow chart of the cooking action of embodiments of the present invention 2.
The control program of this flow chart is stored in the storage part 203(of the inside being positioned at circuit for controlling electricity turning 200 with reference to Figure 22).
Because describe Figure 31 before, so Figure 32 is described.First, when starting the cooking, first, press the action button of the main power switch 63 in the previous action portion 60 being located at the cooking device body A shown in Figure 10, switch on power (step 1.Below, step is economized slightly " ST ").So supply the power supply of the voltage of regulation to circuit for controlling electricity turning 200, circuit for controlling electricity turning 200 performs the abnormal with or without inspection (ST2) of cooking device entirety in person.Control program according to circuit for controlling electricity turning 200 self carries out autodiagnosis, and when not having abnormal, predrive is for driving the motor drive circuit 33(of the CD-ROM drive motor 300 of forced draft fan 30 with reference to Figure 22).In addition, the drive circuit 215 of the liquid crystal display part of left IH heating source 6L, synthetic display parts 100 is also pre-respectively starts (ST3).
Then, according to whether having abnormal determination processing (ST2) result, when no abnormal, ST3 is entered.On the other hand, when finding abnormal, enter the abnormality processing of regulation, final power-on circuit 200 oneself is in person cut off the electricity supply and stops.
When entering ST3, power-on circuit 200 controls drive circuit 278, makes all separate radiation portions 276 and illuminating part 277 luminescence simultaneously on a large scale, lights (yellow light, mode 1).In addition, also can with make separate radiation portion 276 or on a large scale illuminating part 277 any one first one by one luminous, light, then make other light from light source, light, increase the method that the quantity of illuminating part is so gradually, make all separate radiation portions 276 and illuminating part 277 luminescence on a large scale, light.So, become all separate radiation portions 276 and on a large scale illuminating part 277(in mode 1) with luminous, the state lighted in this wise, wait for the state of the next instruction from user.In addition, all here separate radiation portions 276 and on a large scale illuminating part 277 are such as the states sending yellow light continuously.
Then, as described above, because left and right has IH heating source 6L, 6R(Figure 12 reference respectively), so user selects certain one (ST4) wherein by previous action portion 60 or upper surface operating portion 61.Here, when selecting left IH heating source 6L, this selection result is shown in the corresponding region 100L1 of the left IH heating source 6L in synthetic display parts 100.As shown in figure 29, the area of corresponding region 100L1,100L2 automatically expands, this area is maintained certain hour (when other the heating source such as right IH heating source 6R does not operate, the area of 100L1,100L2 that this is extended is maintained until cooked).Then, detect whether there is being pot (heating object N) by the heater coil 6LC that have selected.This detection loads judging part 280 by heating object and carries out.
Circuit for controlling electricity turning 200, based on the Detection Information from heating object mounting judging part 280, when being judged to load pot (heating object N) (ST5), judges whether this pot (heating object N) is suitable for induction heating (ST6).This judgement is carried out according to the discriminant information from heating object mounting judging part 280.Heating object mounting judging part 280 differentiates heating object N based on electrical characteristics, be whether that the pots (heating object N) too small like that such as several cm of diameter and bottom surface produce large distortion, such pot (heating object N) such as bending, and differentiation result is exported as discriminant information.
Then, circuit for controlling electricity turning 200, based on the discriminant information from heating object mounting judging part 280, carrying out the whether suitable determination processing of pot (heating object N) at ST6, when being judged to be suitable, entering the step ST7 that heating action starts.The corresponding region 100L1 of the left IH heating source 6L in synthetic display parts 100, shows thermal power (such as, the 2.5KW of 120W ~ " thermal power 8 " of " thermal power 1 " of minimum thermal power be set.Any one of 9 grades of the 3KW of " maximum heat power ").Such as 1KW.In addition, also can be the thermal power, the such as moderate heat (being such as thermal power 5,1KW) that specify at first by thermal power default setting, even if user does not carry out thermal power setting, also can start the cooking with this initial setting thermal power.
In addition, in unsuitable situation, because the such display unit of above-mentioned synthetic display parts 100 is in the action of this stage, so circuit for controlling electricity turning 200 makes pot (heating object N) unsuitable situation be shown in synthetic display parts 100, in addition export the information of this situation simultaneously to speech synthesizing device 315, and exported with sound notification by loud speaker 316.
When have selected certain one in left and right IH heating source 6L, 6R in this wise, based on prespecified thermal power (as described above such as 1KW), automatically carry out the cooking to start, so also again cooking sign on can not be carried out by enter key or scale, action button etc.Certainly, user at random can change thermal power at any time after induction heating starts.
At ST7A, when starting induction heating action with left IH heating source 6L, the main heater coil MC of the left IH heating source 6L of formation and secondary heater coil SC1 ~ SC4 is utilized to carry out induction heating, but in ST5, because detect is pot (heating object N) is only positioned on main heater coil MC, or or except be arranged in also to be positioned on main heater coil MC secondary heater coil SC1 ~ SC4 which on, so when being only positioned on main heater coil MC, become by the independent induction heating of this main heater coil MC, when also loading identical pot (heating object N) on this external at least 1 secondary heater coil SC, become the collaborative heating produced by main heater coil MC and secondary heater coil SC.Such determination processing is carried out at ST8.
When collaborative heating, relative to participating in the secondary heater coil SC1 ~ SC4 of this collaborative heating and main heater coil MC, under the control of circuit for controlling electricity turning 200, from translation circuit MIV, SIV1 ~ SIV4 supply high frequency electric current respectively, start collaborative heating (ST9).Then, according to the control command from circuit for controlling electricity turning 200, illuminating part 277 makes illumination mode be changed to red luminescence, illuminating state (mode 2) (ST10) from the luminescence of yellow, illuminating state (mode 1) on a large scale.In addition also can be identical with ST3A, still make Yellow luminous, light, by making luminescence, lighting and carry out off and on, make user look like flicker like that, or carry out increasing the changes such as luminous, brightness that is that light, all become the change of said mode in the present invention, switching.
In addition, the information being situation in the collaborative heating action that produced by main heater coil MC and secondary heater coil SC1 such as exports to synthetic display parts 100 by circuit for controlling electricity turning 200 together with thermal power information.Thus, showing with word, figure etc. at corresponding region 100L1 and L2 of above-mentioned synthetic display parts 100 is the secondary heater coil SC1 that heating action starts.In Figure 29, represent the representation case of the word that " secondary coil in main coil and left side add hanker " so simultaneously.In addition, because this display section is arranged in corresponding region L1, so the display such with thermal power information " thermal power: 3KW " is adjacent.That is, thermal power display with represent that the collaborative position adding the display of thermally operated information is adjacent.Here CM belongs to represent it is the collaborative information adding thermally operated situation.In addition, such acoustic information such as circuit for controlling electricity turning 200 is made " secondary coil of same side also heats ", exports to loud speaker 316, shows report with sound from loud speaker 316 simultaneously with above-mentioned message.
In addition, also can from keep the luminescence of illuminating part 277 on a large scale, illuminating state different, such as shown in Figure 20, the separate radiation portion 276 making to be located at each secondary heater coil SC1 ~ SC4 simultaneously luminous, light, make user visually can determine to participate in the secondary heater coil SC1 ~ SC4 of collaborative heating.
Then, until arrive from the cooking halt instruction of user, repeat the process of ST8 ~ ST10 with the short cycle at several seconds intervals.Even if the secondary heater coil SC1 on right side also take part in collaborative heating, because user is sometimes unconscious or make pot (heating object N) move a little left and right forwards, backwards consciously in the midway of the cooking, so after this movement, the mounting position of pot (heating object N) also can change.Therefore, all the time at the determining step ST8 of collaborative heating, also export the information of above-mentioned heating object mounting judging part 280 to speech synthesizing device 315.Thus, utilize speech synthesizing device 315, when determining that circuit for controlling electricity turning 200 answers the process of secondary heater coil SC1 ~ SC4 of heat driven in the information of carrying out according to heating object mounting judging part 280 and temperature sensor 31L1 ~ 31L5, its result of notification in real time.
On the other hand, be judged as at ST8 be not collaborative heating situation (being equivalent to said step MS11 in Figure 31) under, circuit for controlling electricity turning 200 only drives main heater coil MC by controlling main translation circuit MIV.Thus, relative to main heater coil MC, from translation circuit MIV supply high frequency electric current, start individual heater (ST11).Then, corresponding with the main heater coil MC participating in this individual heater, make the illumination mode in the separate radiation portion 276 of edge, the periphery radiant light to this heating region, be changed to red luminescence, illuminating state (mode 2) from the luminescence of yellow, illuminating state (mode 1).
In addition, also can make separate radiation portion 276 still with the colour light emitting identical with ST3, light, by making luminescence, lighting and carry out off and on, make user look like flicker like that, or carry out increasing the changes such as luminous brightness, be all the change of mode, the one of switching.In addition, also can from keep the luminescence in separate radiation portion 276, illuminating state different, still keep the luminescence of illuminating part 277 on a large scale, light, but also can extinguish.Then, step 13 is entered.
Then, when the cooking halt instruction from user arrives, or carry out the timer cooking, when being judged to be by circuit for controlling electricity turning 200 setting-up time (then) that have passed through regulation, circuit for controlling electricity turning 200 controls main translation circuit MIV and subcommutation circuit SIV1 ~ SIV4, and the energising making main heater coil MC and carve all secondary heater coil SC1 ~ SC4 by heat driven at this moment stops.In addition, circuit for controlling electricity turning 200 is that the such prompting of high temperature is aroused in order to the temperature of carrying out top board 21, and the method for to glimmer by making all illuminating parts on a large scale 277 and separate radiation portion 276 with redness etc. makes the action of high temperature notification start (ST14).
From after the energising of main heater coil MC and all secondary heater coil SC1 ~ SC4 is stopped until have passed through the prespecified stipulated time (such as 20 minutes), or until according to the temperature detection data from temperature sensing circuit 240, (owing to being natural heat dissipation till the temperature of top board 21 such as drops to 50 DEG C, so usually need more than 20 minutes), continue the action of high temperature notification.Carry out such temperature reduction or the judgement of time process at ST15, when meeting high temperature notification condition, circuit for controlling electricity turning 200 makes high temperature report end, and (afterwards, mains switch also automatically disconnects in the action of end heating device.That is, when mains switch is switched on, because the power supply supply of connecting the relay kept to not shown mains switch is cut-off, so by disconnecting this relay, mains switch also automatically disconnects.）。
In addition, circuit for controlling electricity turning 200 and the action of high temperature notification start ST14 synchronously, show " because top board or high temperature, so do not touch with hand " such prompting statement at the liquid crystal panel of above-mentioned synthetic display parts 100, elucidate the figure etc. of such situation.In addition, also can around synthetic display parts 100 and in its vicinity, arrange in addition and utilize LED on top board 21, represent the expressed portion that " attention high temperature " such word is such with floating, carry out high temperature notification further thus.
Because be structure as described above, so preferably in 2, also can cannot heat the pot in such large footpath by induction heating in the past, and heater coil is being started to energising, before starting substantial induction heating action, can according to separate radiation portion 276 and on a large scale illuminating part 277 luminescence, light and notify the heating region that user is all.And, heating source is selected and after starting to heat action user, due to user can visual identity separate radiation portion 276 and the luminescence of illuminating part 277 on a large scale, illuminating state, even if so the preparatory stage before mounting pot (heating object N), also the optimal position of mounting pot (heating object N) is known, easy to use for user.
In addition, because high temperature notification also utilize this separate radiation portion 276 and on a large scale illuminating part 277 carry out, so a kind of component number of packages and high cooking device of fail safe of not increasing can be provided.
Then, illuminating part 277 is by illumination mode from after the luminescence of yellow, illuminating state (mode 1) are changed to red luminescence, illuminating state (mode 2) (ST10) on a large scale, is described carrying out collaborative action Figure 33 added thermally operated secondary heater coil switches from SC1 to SC2.
As described above, when user makes elliptoid pot (heating object N) such as move to the left on top board 21, heating object mounting judging part 280 is judged as loading same elliptoid pot (heating object N) above the secondary heater coil SC2 in main heater coil MC and left side, and exports the discriminant information of this situation to circuit for controlling electricity turning 200.
In fig. 33, when circuit for controlling electricity turning 200 detects this situation based on the discriminant information from heating object mounting judging part 280 (ST10A), stop the control of the subcommutation circuit SIV1 corresponding with secondary heater coil SC1, control main translation circuit MIV and subcommutation circuit SIV2, only make main heater coil MC and be positioned at the specific secondary heater coil SC2 action in linkage on the left of it.Thus, according to prespecified thermal power ratio, to above-mentioned two heater coil MC and SC2 from respective translation circuit MIV, SIV2 supply high frequency electric power.Then, stop the energising of secondary heater coil SC1 to the right, maintain the thermal power proportioning of executory " thermal power " (such as 3KW) and regulation (such as, when for utilizing left IH heating source 6L to carry out the cooking of cooking with the thermal power of 3KW, because main heater coil MC is 2.4kW, secondary heater coil SC1 is 600W, so be 4:1), continue the original cooking.The such thermal power of this 3KW is still continued to show (ST10B) with numeral and word by comprehensive display device 100.
In addition, at the corresponding region 100L1 of above-mentioned synthetic display parts 100, the situation that the secondary heater coil with the display such as word, figure heating action switches from SC1 to SC2.Also can show at corresponding region 100L2 in addition.
And, at following step ST10C, as long as user does not change thermal power setting, just repeat the process of ST8 ~ ST10, until arrive from the cooking halt instruction of user, when the cooking halt instruction from user arrives, or carry out the timer cooking, when being judged to be by circuit for controlling electricity turning 200 setting-up time (then) that have passed through regulation, jump the ST14 to Figure 32, circuit for controlling electricity turning 200 stops main heater coil MC and carves the energising of all secondary heater coil SC1 ~ SC4 by heat driven at this moment, end process (ST14 ~ ST16).
This heating release is shown in the corresponding region 100L1 of above-mentioned synthetic display parts 100.In addition, as long as user cuts off speech synthesizing device 315 without switch (not shown), just identically with ST10, also utilize sound to report running to terminate simultaneously.In addition, in Figure 31 ~ Figure 34, describe control program with a series of flow chart, but whether have being placed with of abnormal determination processing (ST2), pot to be prepared by as subroutine without determination processing (ST5), the suitable determination processing of pot (ST6) etc.Further, relative to the main routine determining computer heating control action, carry out subroutine on suitable opportunity and to jump the queue process, in the induction heating cooking of reality performs, multiple exercise abnormality detection, pot are with or without detecting.
On the other hand, in step ST10C, the situation of the thermal power setting that user changes " large footpath pot " when heating is described.
The induction heating cooking instrument of embodiments of the present invention 2 comprises: main heater coil MC, heats by the heating object N be positioned on top board 21, secondary heater coil group SC, the multiple secondary heater coil SC1 ~ SC4 being adjacent to respectively arrange by the outside at this main heater coil is formed, main translation circuit MIV, to main heater coil MC supply high frequency electric current, subcommutation circuit group SIV1 ~ SIV4, respectively to the respective secondary heater coil supply high frequency electric current independently of secondary heater coil group, heating object mounting judging part 280, judges whether to load identical heating object N on main heater coil with the 1st or secondary heater coil, input part 64R, 64L, 70,71,72,90,94,142 ~ 145, by user set by operate induction heating time thermal power, synthetic display parts 100, show the set information of this input part, and circuit for controlling electricity turning 200, based on the set information of above-mentioned input part, control the output of above-mentioned main translation circuit MIV and subcommutation circuit group SIV1 ~ SIV4 independently, and control above-mentioned synthetic display parts 100, circuit for controlling electricity turning 200 is based on the information from above-mentioned heating object mounting judging part 280, start to utilize above-mentioned main heater coil MC and secondary heater coil group SC collaborative add thermally operated situation under, the output of main translation circuit MIV and the output of subcommutation circuit group SIV1 ~ SIV4 is controlled according to the distribution of regulation, with the regulation thermal power become set by user, afterwards to increase, reduce the state of carrying out working in coordination with the quantity adding thermally operated secondary heater coil SC or the secondary heater coil switching to other, maintain the output before change to distribute, the increase of the quantity of the secondary heater coil no matter in above-mentioned collaborative heating action, the switching of minimizing or the secondary heater coil to other, above-mentioned display unit 100 all carries out the display that the thermal power of afore mentioned rules can be visual.
At the ST10C of Figure 33, when being judged as the alteration command of thermal power, enter the ST17 of Figure 34.At ST17, carrying out the judgement that the thermal power after this change is large or less than the thermal power grade (such as 501W) of regulation, when changing to the thermal power larger than regulation thermal power, entering ST18, by the control of circuit for controlling electricity turning 200, maintain the thermal power proportioning of regulation.That is, in the example of above-mentioned 3KW, when thermal power is in commission 3KW, main heater coil MC is 2.4KW, and secondary heater coil SC2 is 600W, and the thermal power proportioning of regulation is 4:1, so this distribution is maintained.Then, utilize circuit for controlling electricity turning 200, the setting thermal power after change is shown in as " in thermal power 1KW " the corresponding region 100L1 of synthetic display parts 100.
On the other hand, when changing to thermal power (have 120W, 300W and 500W this 3) less than the thermal power grade (501W) of regulation, step 19 is entered by the process of step 17, circuit for controlling electricity turning 200 exports control command signal, to become different thermal power proportionings to main translation circuit MIV and subcommutation circuit group SIV1 ~ SIV4.Therefore, no matter the secondary heater coil SC of collaborative heating is the situation of 1 or the situation of more than 2, and the difference of the thermal power of main heater coil MC and secondary heater coil SC is all maintained at constant ratio.In addition, the thermal power after this change and the setting thermal power after changing are shown in the corresponding region 100L1 of synthetic display parts 100 as " thermal power: little 500W ".
The example of representational thermal power and major-minor thermal power ratio is shown in Figure 35 and Figure 36 particularly.
The main heater coil MC that Figure 35 (A) is maximum heat power when being 3KW and the thermal power value (W) of secondary heater coil SC1 ~ 4, and the thermal power of main heater coil and secondary heater coil entirety is than being the constant situation of 4:1.
Figure 35 (B) represents thermal power 6(1.5KW) when main heater coil MC and the thermal power value (W) of secondary heater coil SC1 ~ 4, and the situation that the thermal power of main heater coil and secondary heater coil entirety is more constant than 4:1.
Figure 36 (A) represents thermal power 3(500W) when main heater coil MC and the thermal power value (W) of secondary heater coil SC1 ~ 4, and the thermal power being changed to main heater coil and secondary heater coil entirety is than the situation for 3:2.
On the other hand, when changing to thermal power (120W, 300W and the 500W this 3) less than the thermal power grade (501W) of regulation, when being 50W when making the simulation thermal power of secondary heater coil SC, thermal power ratio is 4:1, as as shown in Figure 35 (B), drive with the little thermal power that 25W and 33W is such because become, so existing problems.
Namely, due in the product of reality, the metal pan impedance separately becoming heating object N is different, even if so apply the High frequency power of the size of more than setting, it is not constant for dropping into pot and being transformed to hot ratio, so as illustrated in the present embodiment, utilize current detection sensor 227, detect the electric current flowed in the resonant circuit be made up of the parallel circuits of left IH heater coil 6LC and resonating capacitor 224L, be used in the judgement whether having heating object N such, it is whether the judgement of the pot (heating object N) being not suitable for induction heating, even whether not detect and the judgement of the current value ratio of standard compared with the too little current or super-high-current etc. of difference more than setting.Thus, the electric current putting on load coil is controlled meticulously, to play the thermal power of specifying.Thus, when reducing thermal power setting, the electric current of flowing is also small, produces this detection and becomes inaccurate problem.In other words, this is because, when thermal power is large, the detection ratio of the current component flowed in resonant circuit is easier to, and when thermal power is little, as long as do not implement the countermeasures such as the sensitivity of raising current sensor, sometimes just corresponding thermal power cannot change exactly, cannot carry out as the such limit movement of thermal power accurately of object.
Although not shown, but as described above, also the current sensor of power supply relative to the input side of the input current value of translation circuit MIV, SIV1 ~ SIV4 is detected, so also can be used together both current values of the outlet side of the coil of this current value and above-mentioned (outlet side) current sensor and carry out suitable control because be in fact provided with.
In addition, secondary heater coil SC also identically with the main heater coil of left IH heater coil 6LC, formed in the shape of a spiral with the assembly line be made up of the fine rule of about 0.1mm ~ 0.3mm, but because the area of section of the current flowing making induction heating produce itself is little, so compare with main heater coil MC, the driving electric power that cannot have high input, maximum heating ability is also relatively little.But, as described above, as long as make the wire diameter of the fine rule of coil monomer attenuate further, and the surface area of winding wire is increased by reeling more, even if make the driving frequency of translation circuit SIV1 ~ SIV4 rise, also can reduce epidermis resistance, by suppressing loss, while suppression temperature rises, also can control less thermal power continuously.
Figure 36 (B) represents thermal power 3(500W) when main heater coil MC and the thermal power value (W) of secondary heater coil SC1 ~ 4, and the thermal power of main heater coil and secondary heater coil entirety is than being the constant situation of 4:1.
At this, preferably in 2, carry out control thermal power proportioning being changed to 3:2.
In addition, because when thermal power 120W or 300W, even if thermal power proportioning is 3:2, also simulation thermal power is had cannot to maintain the situation of more than 50W, so in this case, at the corresponding region 100L1 of synthetic display parts 100, as " set thermal power is too small, cannot cooking.Please thermal power is set as more than 500W " show like that and urge thermal power to change, or carry out the control adding thermal limit etc. of only main heater coil MC.In fact, because be difficult to the scene supposing to stride across main heater coil MC and the such large pot of secondary heater coil SC both sides with 120W or 300W heating, even if so carry out control as described above, actual ease of use can not also be damaged.
When collaborative heating action, in order to make the thermal power ratio of main heater coil MC and secondary heater coil group SC1 ~ SC4, namely major-minor thermal power is than the scope becoming constant, the amount of power to supply is separately controlled by circuit for controlling electricity turning 200, but because as described above, be difficult to the amount of power of applying to suppress lower when little thermal power sets, so the control that the amount of power also can carrying out reducing by the electric power service time of restriction reality the unit interval is such.As long as such as from subcommutation circuit SIV1 ~ SIV4 relative to each secondary heater coil SC1 ~ SC4, control electric power application time such as to reduce to 50% by current on time, the amount of power that just can make in fact to contribute to the unit interval of heating is 50%.Namely, when reducing thermal power in the frequency being difficult to the electric power applied by means of only restriction, controlled by current on time to reduce the time of supply electric power and the ratio of time not supplying electric power, the electric power in fact more worked can be narrowed down to less value, so also such control can be adopted.
In addition, in embodiments of the present invention 2, when collaborative heating, the thermal power ratio of main heater coil MC and secondary heater coil group SC1 ~ SC4 is maintained constant, but when collaborative add hanker all, do not ensure all the time thermal power ratio to be maintained " ratio of regulation ".Such as, all the time the difference between currents flowed at input side and the outlet side of translation circuit is detected in heat driven, go forward side by side and be about to the control that its result feeds back to circuit for controlling electricity turning 200, therefore, when user changes thermal power setting, there is the situation of interim process control instability after just this change, sometimes temporarily depart from the thermal power ratio as target.
In addition, hanker making a pot transverse shifting in collaborative adding, or when only the short time lifts pot, current sensor 227,267A ~ 267D detect such action, and need to identify whether not to be wrong using method etc., need the time selecting suitable control method.
Also can until during the execution of this identification, suitable solution determines, temporarily depart from the thermal power ratio as target.With know moment applying electric current change etc. compared with, as long as user can confirm the thermal power oneself set and not be changed with violating intention, would not entertain in the process of the cooking and uneasyly to feel.
In addition, even when user does not change thermal power setting, user is also had to select the thermal power of the situation of the other cooking, main heater coil MC and secondary heater coil group SC1 ~ SC4 than the situation of change.Such as profile is being used to be rectangular large-scale pan, in the mode that it extends at fore-and-aft direction, and than central point X1 leftward position a little, when being positioned in fried several hamburger minced beef cutlet on top board 21, the 4th secondary heater coil SC4 at the main heater coil MC shown in Figure 18 and left the 2nd tiltedly front oblique rear portion of secondary heater coil SC2 and a left side is utilized to heat.
Such as thermal power recommends 1.5KW or 2KW, with the thermal power ratio of regulation, setting supply amount of power is relative to main heater coil MC and secondary heater coil SC2, the control objectives value of SC4, this ensemble average ground, pan bottom surface temperature is made to increase, but load identical pan in identical position, with 2KW or 1.5KW, when carrying out the fried egg employing several above egg specifically, because overall in pan bottom surface, food materials (egg broken) the unfertile land expansion of the cooking, so compared with the bottom central part of pan, the temperature accelerating periphery rises, sometimes the effective of the method cooking of the thermal power of periphery is strengthened a little.
Therefore, when the such cooking, make the thermal power of 2 secondary heater coil SC2, SC4 entirety be greater than the thermal power of main heater coil MC.Preferably in this wise according to the cooking content of reality, change the thermal power ratio (even identical thermal power grade) of main heater coil MC and secondary heater coil group SC1 ~ SC4.
In addition, as also illustrated in execution mode 1, when paying attention to the cooking menu of such temperature homogeneity, such as during the stipulated time from starting to heat, by driving the main heater coil MC being positioned at central authorities with final thermal power, simultaneously the secondary heater coil SC1 ~ SC4(participating in collaborative heating is driven to become on-state with the thermal power larger than it), the cooking that the pot surface (side of pot) of only preheating pan etc. is such can be realized.
In addition, preferably in 2, main heater coil MC side is set to play the thermal power larger than the thermal power of secondary heater coil group SC1 ~ SC4 entirety, but the present invention is not limited to this completely.According to main heater coil MC side and the condition such as the structure of each secondary heater coil SC1 ~ SC4 and the setting quantity of size or secondary heater coil SC, various change can be carried out, the thermal power of secondary heater coil group SC1 ~ SC4 entirety such as also can be made to be greater than the thermal power of main heater coil MC, or to make both identical.
But, when considering that general family uses, because usually use the pot of circular common size, such as diameter is that the frequency of the pot of about 20cm ~ 24cm is high, so when employing such general pot, because with the independent induction heating of main heater coil MC, so preferably consider the minimum thermal power that can play needed for the such cooking.When general family uses, it is generally acknowledged that the frequency of utilization of the pot of general size is large, the frequency of utilization of large footpath pot is little, if as prerequisite, then thinks and the mainly main heater coil that general family uses the heater coil of central authorities is called main heater coil MC.
In addition, when collaborative heating, namely within certain period, jointly drive the independently load coil of more than 2 and their magnetic is coordinated, from the view point of stable and reliable control, preferably make the action moment of main translation circuit MIV and subcommutation circuit SIV1 ~ SIV4 match.Such as, preferably make to utilize match at least arbitrary opportunity in change opportunity of the beginning opportunity of the heating of main translation circuit MIV and the 1st subcommutation circuit SIV1, stopping opportunity of heating, thermal power.As an one example, consider to have the state from main translation circuit MIV and the 1st subcommutation circuit SIVI action simultaneously, when action is switched to the 2nd subcommutation circuit SIV2, stop with making action same period of main translation circuit MIV and the 1st subcommutation circuit SIVI, afterwards, make main translation circuit MIV and these 2 translation circuits of the 2nd subcommutation circuit SIV2 start to drive simultaneously.
In addition, main translation circuit MIV and each subcommutation circuit SIV also can control as following, namely, stipulated time (such as 10 seconds) after only just having driven is restricted to the low thermal power of regulation, within this stipulated time, to in execution mode 1 by as shown in Figure 32, part or all process of jumping the queue be placed with without determination processing (ST5), the suitable determination processing of pot (ST6) etc. of whether having abnormal determination processing (ST2), pot, if no problem, be then automatically increased to the thermal power of user's setting after and proceed the cooking.
In addition, in above-mentioned example, be illustrated for the resonant circuit be made up of the parallel circuits of IH heater coil and resonating capacitor, but also can use the resonant circuit be made up of the series circuit of IH heater coil and resonating capacitor.
In addition, preferably in 2, when left IH heater coil 6LC is in induction heating, on the left of only, the forced draft fan 30 of cooling chamber 8L operates and the forced draft fan 30 of the right cooling chamber 8R does not operate and is illustrated under such prerequisite, but the using state according to heating device (refers to such as until be about to drive left and right IH heater coil 6LC simultaneously, the other cooking is carried out before 6RC, or use the situation of radiant type central authorities' electrical-heating source 7 or grid heating chamber 9), the environment such as the temperature of upper component receiving room 10, both the cooling chamber 8L of left and right can have been made, each forced draft fan 30 of 8R operates simultaneously, in addition the running speed (draft capacity) of left and right forced draft fan 30 separately also can be made not identical all the time, make one or both according to the suitable change of device for cooking using state.
In addition, the overall dimension of the cooling unit CU of left and right also can be identical, each portion size of forced draft fan 30, the alar part 30F rotated, motor 300, fan drum 37 and component shell 34 also can according to the suitable change such as caloric value, size of cooled object (load coil etc.), but when the maximum heat power of IH heating source 6L, 6R of left and right is equal, preferably make size and the specification generalization of the member of formation of 2 cooling unit CU as far as possible, seek production cost and reduce and assembleability raising.Carry out change and purport of the present invention have nothing to do to arranging cooling unit CU etc. in side, left and right.
In addition, dividing plate 24R, 24L and horizontal interval plate 25 may not be necessary for enforcement the present invention between the upper and lower.Such as certain by the outside wall surface of heat insulating material grating heating chamber 9, when can guarantee sufficient gap between the outside wall surface of grid heating chamber 9, or (such as make natural convection air or forced convertion) when can suppress lower by the temperature in this gap, also can omit these space bar 24,25 and heat insulating materials.In addition, also can in the outside wall surface of cooling unit CU itself, with the side faced by outside wall surface of grid heating chamber 9, insulation board is installed, or formation thermal insulation tunicle.So, final to be formed and interval faced by the outside wall surface of grid heating chamber 9, if identical with the transverse width of body A, then correspondingly can increase the width dimensions of grid heating chamber 9.
In addition, in above execution mode 2, synthetic display parts 100 can show individually or simultaneously the operation condition of multiple left IH heater coil 6LC, right IH heater coil 6RC, radiant type central authorities' electrical-heating source (heater) 7, these 4 thermals source of radiant type electrical-heating source (heater) 22,23, and by carrying out touch operation to enter key 141 ~ 145, instruction adds thermally operated start and stop, power on condition can also be set, but the input function that also can not possess such circuit for controlling electricity turning 200, and be only defined in single Presentation Function.
In addition, judge the heating object mounting judging part 280 whether loading same pot (heating object N) above above-mentioned main heater coil MC and secondary heater coil SC1 ~ SC4, except using the transducer of detected temperatures as the infrared ray sensor 31 illustrated in the above-described embodiment, detecting as current detection sensor 227 except the transducer of the electric current flowed in heater coil, can also use optical detection above transducer, whether have the parts of pot (heating object N).Such as, when there being pot (heating object N) above top board 21, the ligthing paraphernalia of the ceiling in kitchen or sunlight etc. are not incident, but when there is no pot (heating object N), because these interference lights such as illumination light, sunlight are incident, so these changes also can be detected.
In addition, beyond the method judging the material of pot (heating object N) based on the electric current flowed in heater coil and the input current that flows in translation circuit, such as, consider to have the method judging the method for the material of pot (heating object N) etc. based on the voltage flowed in heater coil and the input current that flows in translation circuit, utilize other electrical characteristics.Such as, describe in Japanese Unexamined Patent Publication 2007-294439 publication and differentiate the material of heated object and the technology of size based on the input current value to translation circuit and the current value that flows in heater coil like that.
In addition, in embodiments of the present invention 2, describe heating object mounting judging part 280 " judgement " loads same pot (heating object N) more than main heater coil MC and 1 situation on secondary heater coil SC1 ~ SC4, but in fact do not judge that pot itself is 1.That is, the process that the quantity of the pot of mounting is counted is not adopted in reality.In this induction heating cooking instrument, because be difficult to suppose to carry out cooking such situation with the state loading multiple heating object N on a load coil simultaneously, so the present inventor utilizes above-mentioned current sensor 227,267A ~ 267D, detecting the size of the impedance of more than main heater coil MC and 1 secondary heater coil SC1 ~ SC4, seeing as there is no the situation of large difference in this impedance " loading the situation of same pot (heating object N) ".
In other words, heating object loads judging part 280 as shown in figure 22, because the size of the known electric current flowed in secondary heater coil SC1 ~ SC4 more than main heater coil MC and 1, so the size of known respective impedance.Therefore, when the value of this impedance belongs to the scope of regulation, send to circuit for controlling electricity turning 200 and load the such judgement signal of same pot (heating object N).In the same manner, when utilizing infrared ray sensor 31 detected temperatures, judge that heating object mounting judging part 280 is according to the whether so on an equal basis comparative result of the detected temperatures of each infrared ray sensor 31 corresponding with multiple heater coil, also judge whether to load same pot (heating object N), when use make use of optical sensor that light income changes according to the presence or absence of above-mentioned pot such parts, size according to the light income of light compares, process to load pot more than main heater coil MC and 1 on secondary heater coil SC1 ~ SC4 be real.
As described above, when heating object mounting judging part 280 be judged as loading stride across above main heater coil MC and be positioned at the heating object N of size such on 4 secondary heater coil SC1 ~ SC4 of its periphery, start the initial stage (after finishing abnormality detection process) before induction heating as shown in figure 29, as selectable cooking menu, at synthetic display parts 100, show " heated at high speed " identically with execution mode 1, " fried ", " heat up water ", " preheating ", " cook ", " scald and boil ", 7 cooking menus of " heating up water+being incubated " such.
Therefore, touching 7 keys E1A, E1B, E1C, E2A, E2B, E3A of the selection of these cooking menus, during key part in the part of key E3B, such as heated at high speed, as shown in figure 26, the cooking menu of heated at high speed is selected, and is selected with text importing " heated at high speed ".In fig. 30, by options button E1A itself by lasting display, represent the execution of heated at high speed.
Even if preferably in 2, when have selected this heated at high speed, also the thermal power putting on heating object N can manually be set, main heater coil MC is identical with execution mode 1 with the total thermal power of secondary heater coil, and user at random can select from the scope of 120W ~ 3.0KW.
The major-minor thermal power ratio of main heater coil MC and secondary heater coil SC1 ~ SC4, automatically determined by circuit for controlling electricity turning 200, make the limit being no more than the above-mentioned total thermal power that user selectes, and become in the scope of regulation thermal power ratio, user cannot at random set.In addition, be controlled so as to, consistent in the direction of the high-frequency current in the main heater coil MC region adjacent with secondary heater coil SC1 ~ SC4.
In addition, if touch in 7 keys of cooking menu selection, " scald and boil " options button E1C, then the cooking menu of " scald and boil " can be carried out.Even if such as when using mainly to boil the large footpath and the such pot of dark " pasta pot " that use for the purpose of pasta, also preferably at full speed boil water in 2, and can transfer to scald and boil the cooking.
The default value of such as thermal power is 2.0KW, but user can from from the beginning of thermal power is set as 3.0KW and heating.In this case, major-minor thermal power automatically can be determined by control part 100 than also, and user does not at random set, and such as the thermal power of main heater coil MC is set to 1.0KW, and the total thermal power of 4 secondary heater coils is set to 2.0KW.When water seethes with excitement, circuit for controlling electricity turning 200 exports notification signal, at the guidance field 100GD of the regulation of synthetic display parts 100, carries out the display of the input of urging pasta or noodles, utilizes speech synthesizing device 315 to report this situation to user simultaneously.Now, when again not setting thermal power, notification automatically reduces thermal power.
Under user whatever inactive situation, as Embodiment 1, when becoming fluidized state, circuit for controlling electricity turning 200 exports the command signal reducing thermal power to main translation circuit MIV and subcommutation circuit SIV1 ~ SIV4.When user sets thermal power again, or touch when the enter key that " start to scald and boil " that the viewing area 100L2 of the regulation of synthetic display parts 100 shows is such, again start heating with 3.0KW, but in this case, such as being divided into by adjacent 4 secondary heater coils SC1, SC2 these 2 to be 1 group and SC3, SC4 these 2 is 1 group, make these 2 to organize alternately each 15 seconds, the thermal power summation of respective group is set to 1.5KW ground heat driven respectively.
Like this, promote after boiling that the control of the convection current of boiling water is automatically carried out.In addition, even if user is after just seething with excitement, thermal power is reduced to and is less than 3.0KW, such as 2.0KW or 1.0KW, be no more than the scope of summation of this thermal power amount, also perform the heating action that same convection current promotes to control.
As mentioned above, in present embodiment 2, in the synthetic display parts 100 of display heating condition, above-mentioned 7 cooking menu E1A, E1B, E1C, E2A, E2B, E3A, E3B selection key, selecting the state operated to be shown by user.Therefore, because according to the selection of the cooking menu as object, the heat driven type be applicable to automatically is determined by control part, so except to attention heating time, pay attention to the object of the users such as temperature homogeneity, wish the type of drive of corresponding heater coil, display part can be utilized to operate by the options button of this cooking menu, there is the mistake can eliminating user and use, alleviate such advantage such as spiritual burden.
Execution mode 3
Figure 37 ~ Figure 42 is the figure of the induction heating cooking instrument representing embodiments of the present invention 3, Figure 37 is represent only to use the left IH heating source of the built in type induction heating cooking instrument of embodiments of the present invention 3 and the vertical view carrying out the display frame example of synthetic display parts when large footpath pot heats.Figure 38 be only use the built in type induction heating cooking instrument of embodiments of the present invention 3 left IH heating source and to the longitudinal section when heating of the pot in usual footpath.Figure 39 is the vertical view of the display frame example of the synthetic display parts represented when only using the left IH heating source of the built in type induction heating cooking instrument of embodiments of the present invention 3 and carry out the pot heating of large footpath.Figure 40 is the vertical view of the display frame example of the synthetic display parts represented when only using the left IH heating source of the built in type induction heating cooking instrument of embodiments of the present invention 3 and carry out the pot heating of large footpath.Figure 41 is the vertical view of the display frame example of the synthetic display parts represented when only using the left IH heating source of the built in type induction heating cooking instrument of embodiments of the present invention 3 and heat the large-scale pot of other Long Circle.Figure 42 is the vertical view of the display frame example of the synthetic display parts represented when only using the left IH heating source of the built in type induction heating cooking instrument of embodiments of the present invention 3 and heat the pot in usual footpath.In addition, to the same or equivalent part of structure with above-mentioned execution mode 1 ~ 2, identical Reference numeral is marked.In addition, only otherwise express especially, the term in execution mode 1, also use with the identical meaning in present embodiment 3.
In present embodiment 3, in the same manner as above-mentioned execution mode 2, there is the display part 100LX that left IH heating part 6L is special.Namely, as above-mentioned execution mode 2, at the side position that keeps left from the center, left and right of body A, be provided with left thermal power setting operating portion 71, in its vicinity and its rear position, user can be configured near the front (be seen as front from user, be below in the paper of Figure 37 ~ Figure 42) of top board 21 through the visual display part 100LX such to one or more display frame of top board 21.
Show schematic figure 311,312 as shown in figure 40 with the display frame at display part 100LX is the 1st feature (at this point and above-mentioned execution mode 1,2 different) like that, and this schematic figure 311,312 is for carrying out the collaborative heating of at least 1 secondary heater coil in main heater coil MC and 4 secondary heater coil SC1 ~ SC4 to user's display with figure.That is, when collaborative heating, the figure 311 schematically showing main heater coil MC and the figure 312 schematically showing secondary heater coil SC1 ~ SC4 are displayed on the special display part 100LX of left side IH heating part 6L.
In addition, preferably in 3, at display part 100LX, main heater coil MC and the overall up-to-date thermal power information of secondary heater coil SC group also show with the display object such as word 337.In the example of Figure 40, current input maximum heat power is 3KW, main heater coil MC is set to the thermal power of 2.4kW, the secondary heater coil SC in left side is set to the thermal power of 0.6KW, be situation in induction heating action by " current thermal power 3KW " such text importing clearly known (in addition, when carrying out this display, speech synthesizing device 315 also can be utilized to report) simultaneously.
Enter key 330 ~ 334,336 is enter keies of thermal power, in the front side position part of the frame body 20 of the upper surface periphery of covering body A, utilizes push switch, to be formed with operating portion in the mode of a row arrangement respectively.In addition, the right side in display part 100LX, is formed with the liquid crystal display picture 45L of the current thermal power of display.The enter key 330 ~ 334,336 of each thermal power setting can select the thermal power value of 6 grades, to set 6 with this each thermal power value becomes large thermal power accordingly mode along with going to the right.By 1 pressing operation, directly thermal power can be set.When selecting specific thermal power, its input results is shown in above-mentioned liquid crystal display picture 45L.In addition, corresponding with this thermal power, the thermal power proportioning result of regulation is also shown to user by the display object such as word 337.
Reference numeral 350 is selector switches that the convection current preferably becoming feature in 3 promotes to control, and operating portion is exposed and keeps left on the frame body 20 of side position in the center, left and right from body A.The above-mentioned circuit for controlling electricity turning of this Switch Controller 200 gives the command signal whether making convection current such described in above-mentioned execution mode 1 promote control action.When 1 this switch is pressed in the midway of cooking operation, after cooked has been seethed with excitement, or from the stage of (temperature of such as heating object or cooked rises to the situation of 98 DEG C) before at a simmer, automatically implement convection current such described in execution mode 1 to promote to control, perform the energising opportunity of the secondary heater coil group SC of switching or its thermal power is changed, or the control making the sense of current in the region adjacent with main heater coil MC mutually equal.
Circuit for controlling electricity turning 200 is controlled so as to, as long as heating object mounting test section 280 is not judged to load the pot in the top overall such large footpath throughout 4 secondary heater coils and main heater coil MC, selector switch 350 just cannot play a role effectively.In addition, so long as not when temperature sensing circuit 240 is judged to be in heating object N liquid becomes boiling temperature by accepting measurement and the temperature detection information of the said temperature transducer of the temperature of heating object N, or be judged to be at a simmer before (temperature of such as heating object or cooked rises to the situation of 98 DEG C) when, even if operation convection current promotes selector switch 350, any effective instruction also cannot input circuit for controlling electricity turning 200, or effective command signal cannot from circuit for controlling electricity turning 200 to outputs such as main translation circuit MIV and subcommutation circuit SIV1 ~ SIV4.In addition, also this switch can be configured in the surface of the picture of display part 100LX as touch key, the operation keys of display switch 350 in this display part.
Cooking menu has multiple, and user at random can select some from them, and its options button is drawn in Figure 39.Figure 39 represents the state be about to before the pot of collaborative heating large footpath.In addition, as execution mode 2 as shown in Figure 28, select use as cooking menu, have the options button E1A of heated at high speed, heat up water with options button E1B, scald and boil options button E1C, preheating options button E2A, the options button E2B that cooks, fried options button E3A, these 7 keys of options button E3B of heating up water+being incubated.Figure 39 represents " please select cooking menu ", and such word MM is shown in display frame, the some states selecting in them to make user.
Before collaborative heating starts action or in heating action, operate convection current by user to promote to control selector switch 350, circuit for controlling electricity turning 200 exports control signal to the translation circuit MIV of main heater coil MC and subcommutation circuit SIV1 ~ SIV4, make to change relative to the High frequency power supply condition of main heater coil MC and secondary heater coil group SC, implement in execution mode 1, describe such convection current and promote to control.Namely, preferably in 3, heating object is utilized to load test section 280, detect when main coil MC and secondary heater coil SC1 ~ SC4 whole directly over load large footpath pot, collaborative heating can be implemented, but after cooked has been seethed with excitement in heating process afterwards, or can automatically transfer to collaborative heating from the stage of (temperature of such as heating object or cooked rises to the situation of 98 DEG C) before at a simmer.User utilizes selector switch 350 at random to determine, and after collaborative heating, whether carry out convection current promotes to control.
Like this, user can utilize selector switch 350 at random to determine after collaborative heating, whether carry out convection current promotion control.Namely, the cooking menu before no matter collaborative heating starts, when the midway user cooking operation wants the mode of heating carrying out convection current promotion, as long as operation convection current promotes to control selector switch 350, the stage just can seethed with excitement from this cooked or at a simmer before stage, implement automatically to switch the control of the driving of secondary heater coil SC1 ~ SC4.In addition, when have selected convection current and promoting to control selector switch 35, also can have more than the 1st convection current carrying out describing in execution mode 1 and promote to control, also carry out the 2nd or the 3rd convection current and promote to control.
Preferably in 3, be also provided with the separate radiation portion 276 arranged in execution mode 2.Central blaze portion (main heater coil illuminating part) STC is arranged on the below of top board 21 in the mode of the surrounding around main heater coil MC, represent the outer fringe position in the region roughly corresponding with the heating region of main coil MC, be annularly located at position neighbouring immediately below the leader label 6LM shown in Figure 10, Figure 12 of execution mode 2.
In addition, separate radiation portion 276 perform collaborative add thermally operated situation under and do not perform collaborative add thermally operated situation under, make the color of the light of radiation different.When illuminating part 277 is lighted on a large scale, as in Figure 39, Figure 40 with shown in dotted line, light belt two important place of ring-type is presented on top board 21.
As shown in figure 38, preferably in 3, around the discoideus coil supports body 290X of the heat resistant plastice of the main heater coil MC of mounting, configure the heat resistant plastice coil supports body 290Y being placed with the donut-like of 4 secondary heater coil SC1 ~ SC4 across the ground, gap 352 of regulation.Above-mentioned 2 coil supports bodies 290X, 290Y are fixed on air supply duct 353, and this air supply duct 353 has multiple squit hole 42C in the upper surface entirety becoming end face.
This air supply duct 353 is pipelines that the upper shell 42A in above-mentioned execution mode 2 becomes to be integrated with lower casing 42B.The inner space 354 of this air supply duct 353 as imported cooling air forcibly as shown in the arrow mark Y4 of Figure 38.Open-work 355 to add up to the mode at dispersion 4 positions on the circle centered by centre line C L 2, according to the outer peripheral portion of 90 degree of gap-formings at the coil supports body 290Y in outside, 1st, the 3rd secondary heater coil SC1, SC3 is located at its right positions, in addition the 4th secondary heater coil SC4 is located on the left of it, and the 2nd secondary heater coil SC2 is located at its nearby position in addition.
Light-conductive hole 356 is the holes of the end face being formed in air supply duct 353 with these open-works accordingly, has circle or elliptical shape.Separate radiation portion 276 is point-source of lights of being made up of light-emitting components such as light-emitting diodes or makes the light of such light source be diffused into the circular scope of regulation and the component of luminescence, and Reference numeral STC is above-mentioned central blaze portion (main heater coil illuminating part).When entreating illuminating part STC to light in these, as shown in the arrow mark upward of Figure 38 chain lines, send the display light of the luminous ray through top board 21.In addition, as variation, position near the outside of each secondary heater coil SC1 ~ SC4, when being formed with above-mentioned open-work 355 dispersedly with interval thin to a certain degree, on top board 21, display light can visual identity with a line states.
As shown in figure 39, central blaze portion (main heater coil illuminating part) STC is the gap 352 utilizing the regulation be formed between above-mentioned coil supports body 290X and 290Y, from this gap to the structure of the light of top board 21 side radiation display.The light-emitting component of central blaze portion STC is fixed to the inner side end face of air supply duct 353 by holding plate 357.Anti-magnet ring 291, to cover the mode of the outer peripheral edges of coil supports body 290Y, is adjacent to it or closely arranges.
In addition, the above-mentioned gap 352 shown in Figure 38 has and the roughly same size in space 271 between the outermost side face of main heater coil MC and the inside circumference of secondary heater coil SC1 ~ SC4.In addition, ferrite-plate 73 prevents material for flux leakage, orthogonal with the direction of the current flowing with main heater coil MC and secondary heater coil SC1 ~ SC4 or intersect mode, at the lower position of each coil, from central portion each configuration 4 or 8 radially respectively of each coil.
Because be structure as described above, so with above-mentioned execution mode 1,2 identical, the options button E1A of heated at high speed can be utilized, heat up water with options button E1B, scald and boil options button E1C, preheating options button E2A, the options button E2B that cooks, fried options button E3A, these 7 keys of options button E3B of heating up water+being incubated, at random select these cooking menus, so can be selected to and pay attention to firing rate, pay attention to the control action of the corresponding heat characteristic of the hope of the users such as homogeneous heating.
Namely, as shown in Figure 41, when throughout 4 secondary heater coil SC1 ~ SC4 and main heater coil MC this whole above the large footpath pot of such size, when namely utilizing 4 secondary heater coil SC1 ~ SC4 to carry out the large footpath pot of the such size of collaborative heating, there is following convenience, namely, can according to the instruction of circuit for controlling electricity turning 200, select 7 cooking menus, and user can utilize the convection current that can at random operate to promote the selector switch 350 controlled, convection current is selected to promote the enforcement controlled.Thus, heating is started with cooking menus such as heated at high speed patterns, but cooked is put into pot start endure stew after, when user does not want that implementing convection current promotes to control, as long as only press selector switch 350, just from this stage, can promote from multiple convection current as described above the control method that Guaranteed enforcement is suitable.In addition, circuit for controlling electricity turning 200 the 1st convection current do not stored in above-mentioned execution mode 1 promotes that controlling the ~ the 3 convection current promotes to control all control programs, when only storing one, is merely able to implement this control certainly.
Even if when employing the large-scale heating object N of circle as shown in Figure 41, because become the display frame of the display part 100LX shown in Figure 39, so when have selected the cooking menu of heated at high speed pattern here, display part 100LX be switched to such as shown in figure 41 display frame (but, main heater coil MC is different with the display of the schematic figure 311,312 of secondary heater coil group SC), control is as described below performed.
Thermal power: manually can set thermal power.
Main heater coil MC is identical with execution mode 2 with the total thermal power of secondary heater coil, and user is from selected 1 grade of the grade of 9 scope of 120W ~ 3.0KW.
The major-minor thermal power ratio of main heater coil MC and secondary heater coil SC1 ~ SC4, is automatically determined by circuit for controlling electricity turning 200, and to become in the scope of regulation thermal power ratio, user cannot at random set.Such as major-minor thermal power ratio is (during large thermal power) 1:2 ~ (during little thermal power) 1:1 when (during large thermal power) drives 1 or 2 secondary heater coils.Therefore, when this 3KW, main heater coil is put into 1.0KW, and 4 secondary heater coil SC1 ~ SC4 are respectively put into 500W in addition, and thermal power summation is put into 2.0KW.
Sense of current:
The direction being controlled so as to the high-frequency current in the region that main heater coil MC and 4 secondary heater coil SC1 ~ SC4 are adjacent is consistent.
In addition, with part or all and the main heater coil MC that are secondary heater coil SC1 ~ SC4 carry out collaborative heat action or or to only have main heater coil to heat separately irrelevant, user all the time can both from top board 21 by observe the part (liquid crystal display picture 45L) of the regulation of the special display part 100LX of left IH heating part 6L and confirmation the thermal power that has been set how to change (speech synthesizing device 315 also can be utilized to know).In addition, the number change of the collaborative secondary heater coil SC1 ~ SC4 heated no matter is participated in, or or other secondary heater coil SC1 ~ SC3 changes, and after becoming these changes, user easily can know the information of thermal power.
In addition, when using obviously small-sized heating object N, because collaborative heating action is prohibited, so can not need from the display frame of above-mentioned display part 100LX, show the schematic figure 311,312 of main heater coil MC and secondary heater coil group SC, accordingly, show (with reference to Figure 42) together with the information that main heater coil MC independent thermal power display 337 and cooking menu can be made to show 351 grades.Thereby, it is possible to by displaying contents substantialization during heating beyond during collaborative heating action.
In addition, preferably in 3, when utilizing main heater coil MC monomer to heat, in order to more clearly represent that the heating object N such as pot preferably load position, be provided with central blaze portion (the main heater coil illuminating part) STC of the heating region outer fringe position representing roughly corresponding with the heating region of main heater coil MC, so when using circular pot (the heating object N) of the general size matched with the external diameter of main heater coil MC, can easily hold the center of main heater coil MC by visual and preferably load position.
In addition, preferably in 3, central blaze portion (main heater coil illuminating part) STC carried out luminescence, lights action before the collaborative heating action of main heater coil MC and secondary heater coil SC1 ~ SC4 starts, in the collaborative heating action of main heater coil and secondary heater coil, also continue luminescence, light, but also can extinguish in the collaborative heating action of main heater coil MC and secondary heater coil SC1 ~ SC4.
In addition, the options button E1A of the heated at high speed in this execution mode 3, heat up water with options button E1B, scald and boil options button E1C, preheating options button E2A, the options button E2B that cooks, fried options button E3A, these 7 keys of options button E3B of heating up water+being incubated, the electrostatic capacity type soft-touch control that make use of transparency electrode as the display part surface at the special display part 100LX of left IH heating part 6L is shown with appropriate time, but also can be set to function all the time with the switch of text importing in the push type form on the surface of upper frame 20 and top board 21.
In addition, as shown in figure 38, because the inner space 354 that central blaze portion (main heater coil illuminating part) STC and separate radiation portion 276 are configured in air supply duct 353 is inner, so in order to cool the cooling air that main heater coil MC and secondary heater coil SC1 ~ SC4 is supplied to from outside, to arrive the state contacts of the normal temperature before these heater coils, so illuminating part is cooled all the time.Thus, there is the effect that can prevent the heat deterioration of the light-emitting components such as more difficult resistant to elevated temperatures light-emitting diode for a long time.In addition, the coil supports body supporting main heater coil MC and secondary heater coil SC1 ~ SC4 also becomes more than 300 degree sometimes when induction heating, but because be separated into inner side coil supports body 290X and be positioned at the structure of the coil supports body 290Y outside it across the gap 352 of regulation, so be the structure being difficult to the temperature of the coil supports body 290X of the inner side be positioned at immediately below the main heater coil MC that the most frequently uses to be delivered to the coil supports body 290Y being positioned at outside.
In addition, be fed into a part for the cooling air of the inner space 354 of air supply duct 353, by above-mentioned gap 352 and open-work 355, go out to top board 21 side spray, but expand component, the even holding plates 357 such as the light guide plate (not shown) be made up of transparent materials such as acrylic resins of this light, so the effect of the heat deterioration that can prevent these components can be expected with now can being cooled to the light-emitting component of central blaze portion STC, the light-emitting component in separate radiation portion 276 or rounded shape.Central blaze portion STC and separate radiation portion 276, utilize transparent resin plate, the light of the point-source of light of the light-emitting components such as the diode of self-luminous in the future, in banded or expand annularly, and seeming rounded line or dotted line shape from the top light of top board 21, need above-mentioned light guide plate (not shown), if but making such light guide plate be applied in is formed in the open-work 355 of above-mentioned coil supports body 290Y, and when extending to as much as possible near immediately below top board 21, more light radiation then can be made on top board 21, is preferred.And in this case, according to this execution mode 3, because light guide plate can be made with not contacting the peritreme of open-work 355 not erect the top of coil supports body 290Y, so the high temperature of coil supports body 290Y can be avoided directly to transmit.
In execution mode 1 ~ 3, the parts showing the thermal power of main heater coil MC and secondary heater coil group SC1 ~ SC4 are not necessarily limited to the special display part 100LX of left IH heating part 6L as described so, also can be that the synthetic display parts 100(general with other heating source is with reference to execution mode 2).In addition, also can be utilize multiple light-emitting component, the method for size that the luminescence of such as LED represents the electric power dropping into induction heating source.It can also be such as the display unit of the multiple light-emitting diode of use disclosed in Japanese Unexamined Patent Publication 2008-171757 publication.In addition, the display mode of thermal power, both can be direct display or the figure such as symbol, block diagram of the thermal power value (watt) utilizing numeral or word, can also be with the word of " the large thermal power ", " little thermal power " of the size of relative concept display thermal power etc.In addition, as shown in figure 40, also can utilize luminous component brightly or represent the enter key (in this example embodiment for 3KW with) of thermal power itself with other color displays, can identify significantly with other key, thus user can thermal power shown by this enter key of visual identity.
In addition, in above-mentioned execution mode 1 ~ 3, form the sum of the secondary heater coil of secondary heater coil group SC1 ~ SC4 and be 4 relative to the sum of the subcommutation circuit SIV1 ~ SIV4 of above-mentioned secondary heater coil supply high frequency electric current, quantity is identical, but the present invention is not limited to this.Such as, also can as the example of Figure 18 of expression execution mode 2, with central point X1 for having a common boundary, at its nearby side configuration the 1st heater coil SC1 and the 2nd secondary heater coil group SC2, as with this nearby side before and after the rear side of symmetrical position, configuration the 3rd heater coil SC3 and the 4th secondary heater coil group SC4.That is, this is the such variation of angle that 4 secondary heater coil SC1 ~ SC4 are configured to inclination 45 degree respectively.In this variation, the 1st subcommutation circuit SIV1 can be made to drive the 1st heater coil SC1 and the 4th secondary heater coil SC4, make the 2nd subcommutation circuit SIV2 drive the 3rd heater coil SC3 and the 2nd secondary heater coil SC2.
In this case, 1st subcommutation circuit SIV1 does not drive the 1st heater coil SC1 and the 4th secondary heater coil SC4 simultaneously, only drive one party, in addition, 2nd subcommutation circuit SIV2 does not also drive the 3rd heater coil SC3 and the 2nd secondary heater coil SC2 simultaneously, only drive one party, reduce unwanted magnetic dispersion like this, the viewpoint improving the efficiency of heating surface is preferred.
According to such structure, because reduce the quantity of the translation circuit of high price, can reduce costs so have, circuit substrate can also be reduced the such effect of capacity is set.In fact as the example of Figure 18, when being configured with 4 secondary heater coil SC1 ~ SC4, when user uses the non-circular pot such as Long Circle or ellipse to cook, if nearby placing with growing crosswise, then can be corresponding for having a common boundary and being positioned at the 1st secondary heater coil SC1 of its front side and the 2nd secondary heater coil SC2 with central point X1 by driving, when this external left side relative to central point X1 is placed with extending in the longitudinal direction, by driving the 4th secondary heater coil SC4 of the 2nd secondary heater coil SC2 and rear can be corresponding, when the right side relative to central point X1 is placed with extending in the longitudinal direction, by driving the 1st secondary heater coil SC1 and the 3rd secondary heater coil SC3 can be corresponding, so in arbitrary type in above-mentioned 3 types, switch a subcommutation circuit, to select and to use in 1 group of (2) secondary heater coil some all without any problem.
In addition, when in this wise with a common subcommutation circuit switch two secondary heater wires enclose the land use, as long as make a common subcommutation circuit switch according to the condition of time, such as short time interval to be alternately connected with a secondary heater coil and another secondary heater coil, result just can drive two secondary heater coils, such as, if with two subcommutation circuit each driving 2 secondary heater coils respectively, then total 4 secondary heater coils can be used in cooking.Thus, when arranging the secondary heater coil of the quantity more than 4, also by this countermeasure, the quantity of subcommutation circuit can be suppressed for Min..
Like this, when using two secondary heater coils in a common subcommutation circuit simultaneously dual-purpose, such as in full-bridge circuit as shown in figure 23, as long as by secondary heater coil SC3(and SC1 in series or in parallel) in the series resonant circuit that is connected to secondary heater coil SC1 and resonating capacitor 110B.So, even if SC1 and SC3 is driven simultaneously, because driving frequency does not produce substantial difference, tweeting sound is not produced.
In addition, as long as make a common subcommutation circuit switch according to the condition of time, such as short time interval to be alternately connected with a secondary heater coil and another secondary heater coil, result just can drive two secondary heater coils, such as, if with two subcommutation circuit each driving 2 secondary heater coils respectively, then total 4 secondary heater coils can be used in cooking.Thus, when arranging the secondary heater coil of the quantity more than 4, also by this countermeasure, the quantity of subcommutation circuit can be suppressed for Min..
In addition, as explained in execution mode 1, the control method that two secondary heater coils that heat driven is adjacent are simultaneously such, even if to drive the mode of non-conterminous two secondary heater coils also can realize with a translation circuit as described above.That is, also can perform the convection current shown in execution mode 1 and promote pattern.
In addition, when implementing to switch successively to the energising of above-mentioned 1st secondary heater coil and the 2nd secondary heater coil or driving such control off and on, because user does not know to carry out what kind of induction heating, also uneasy sense is likely entertained during use, so better way is, the synthetic display parts 100 utilizing word, mark or animation etc. to promote as described above for convection current and suppress the energising of the secondary heater coil group of overflowing to switch to be shown in real time as described above, liquid crystal display picture 45R, 45L etc.
In addition, in above-mentioned execution mode 1 ~ 3, be provided with the options button E1A of heated at high speed, heat up water with options button E1B, scald and boil options button E1C, preheating options button E2A, 7 dishes singly-bounds such as options button E2B of cooking, even if suppose to select these dishes singly-bounds, be also not necessarily in due course and automatically implement the situation that convection current promotes control.Therefore, preferably prepare the options button that convection current promotes to control necessary cooking recipe (recipe) in advance, select this key for user.Such as, for the key of the curry as one of cooking recipe, owing to being that there is dense and burned liquid, so be difficult to produce convection current, easily burn in the bottom of a pan.So, in the past to add curried powder after boiling vegetables fully, and stop induction heating after putting into curry powder, or carry out with minimum thermal power drive load coil enduring the cooking of stewed such method.
Therefore, before the beginning of cooking, just start after or midway user operates " curry " such options button, preferably when putting into curried powder, notification user promotes control to implement convection current of the present invention.Specifically, as execution mode 2 as shown in Figure 27, consider there is following method, namely, utilize and the reference information in the various cooking is shown to the guidance field 100GD of the synthetic display parts 100 of user's notification at any time, or broadcast with speech synthesizing device 315, press convection current promotion control selector switch 350 to urge.If convection current promotes that controlling selector switch 350 is selected, then the change etc. of the power on condition of secondary heater coil SC, main heater coil MC is automatically carried out by circuit for controlling electricity turning 200, whether that the judgement on opportunity suitable after boiling etc. is automatically carried out by circuit for controlling electricity turning 200, when suitable opportunity, proceed the heating that convection current promotes.
Utilizability in industry
Induction heating cooking instrument of the present invention combines main heater coil and secondary heater wire and encloses the land and carry out heat driven, when user carries out cooking, because the cooking menu matched with the hope of firing rate, homogeneous heating etc. easily can be selected, its result also can confirm, so can be used in the induction heating type heating source Special-purpose cooking device of placed type and built in type widely and have other the compound induction heating cooking instrument of radiant type heating source.
The explanation of Reference numeral
A body, B ceiling plate portion, C housing section, D heater block, E functional unit, F control assembly, G display unit, W transverse width dimension, AM significant notation, CL, the left and right center line of CL1 body A, the left and right center line of the left IH heating source of CL2, CU cooling unit, DA left IH heater coil outside dimension, the configuration outside dimension of DB ancillary coil, the maximum outside diameter size of DC display body on a large scale, the options button of E1A heated at high speed, E1B heats up water with options button, E1C scalds and boils options button, E2A preheating options button, E2B cooks options button, the fried options button of E3A, the options button that E3B heats up water+is incubated, KT kitchen utensils, K1 arranges mouth, KTK peristome, N heating object (pot), the secondary heater coil (group) of SC, the secondary heater coil of SC1 ~ SC4, the main heater coil of MC, the main heater coil translation circuit of MIV, the secondary heater coil translation circuit of SIV1 ~ SIV4, SX space, STC central blaze portion (main heater coil illuminating part), X1 central point, X2 central point, 2 body housings, 2A metastomium, 2B anterior lip plate, 2S rake, 2U metastomium back face wall, 3B rear flange, flange on the left of 3L, 3R side flange, the left IH heating source of 6L, the left IH heater coil of 6LC, 6LM leader label, the right IH heating source of 6R, the right IH heater coil of 6RC, 6RM leader label, 7 radiant types central authorities' electrical-heating source (heater), 7M leader label, cooling chamber on the left of 8L, cooling chamber on the right side of 8R, 9 grid heating chambers, 9A front openings, 9B rearward openings, 9C inner frame, 9D outside framework, 9E exhaust outlet, 10 upper component rooms, 12 rear part exhaust rooms, 13, 13A central portion, 13B handle, 14 discharge ducts, 14A upper end opening, 14B cylindrical base, 14C air vent hole, 20 upper frames (frame body), the right ventilating opening of 20B, 20C central ventilated mouth, the left ventilating opening of 20D, 21 top boards, 22 radiant type electrical-heating sources (heater), 23 radiant type electrical-heating sources (heater), 24A notch part, dividing plate between the upper and lower on the left of 24L, dividing plate between the upper and lower on the right side of 24R, 25 horizontal interval plates, 26 spaces, 28 rear portion space bars, 28A exhaust outlet, 30 forced draft fans, 30F alar part, 31R infrared ray sensor, 31L, 31L1 ~ 31L5 infrared ray sensor, 32 rotating shafts, 33 motor drive circuits, 34 component shells, 34A the 1st exhaust outlet, 34B the 2nd exhaust outlet, 37 fan drums, 37A sucks cylinder, 37B suction inlet, 37C exhaust outlet (outlet), 37D shell, 37E shell, 39 plenum chambers, 41 circuit substrates, 42 cooling pipes, the upper shell of 42A, 42B lower casing, 42C squit hole, 42D spaced walls, 42E spaced walls, 42F airspace, 42G airspace, 42H airspace, 42J connected entrance (hole), 42K ventilating opening, 43A radiating fin, 43B radiating fin, 45R liquid crystal display picture, 45L liquid crystal display picture, 46 front piece shells, pipeline under 46A, the upper pipeline of 46B, 46C breach, 50 container-like covers, 56 installation base plates, 57 elec-tric-electronic components, 60 previous action portions, 61 upper surface operating portions, previous action framework on the left of 62L, previous action framework on the right side of 62R, 63 main power switchs, 63A action button, the right operation scale of 64R, the left operation scale of 64L, the right display lamp of 66R, the left display lamp of 66L, 70 right thermal power setting operating portions, 71 left thermal power setting operating portions, 72 central operation portions, 73 flux leakages prevent material, 75 AC power, 76 rectification circuits, 77A switch element, 77B switch element, 78A switch element, 78B switch element, 79A switch element, 79B switch element, 80 DC power portion, 81A switch element, 82B switch element, 86 smoothing capacitors, 88A switch element, 89A switch element, 90 single tactile setting key portions, 91 weak thermal power keys, thermal power key in 92, 93 heat-flash power bonds, 943kW key, 95 radiant type electrical-heating sources 22, 23 use action button, the action button of 96 shut-down operation switches, the action button of 97A temperature regulation switch, the action button of 97B temperature regulation switch, 98 power supply on-off shift knobs, 99A configuration switch, 99B configuration switch, 100 synthetic display parts, the corresponding region of 100L1 left IH heating source 6L, the corresponding region of 100L2 left IH heating source 6L, the corresponding region of 100M1 radiant type central authorities electrical-heating source 7, the corresponding region of 100M2 radiant type central authorities electrical-heating source 7, the corresponding region of 100R1 right IH heating source 6R, the corresponding region of 100R2 right IH heating source 6R, the region for cooking of 100G grid heating chamber 9, 100GD guidance field, 100F key viewing area, any viewing area of 100N, 100LX display part, the right thermal power display lamp of 101R, the left thermal power display lamp of 101L, 102B switch element, 103B switch element, 104B switch element, 105B switch element, 106 forced draft fans, 106A rotor, 106B CD-ROM drive motor, 108 connect dish, 109 wire nettings, 110A resonating capacitor, 110B resonating capacitor, 113 gaps, 114 gaps, 115 gaps, 116 spaces, 121 deodorizing catalyst, 121H catalyst electric heater, 130 convenient menu key, the convenient menu key of the right IH of 131R, 132 covers, 141 enter keies, 142 enter keies, 143 enter keies, 144 enter keies, 145 enter keies, 146 enter keies, 200 circuit for controlling electricity turning, 201 input parts, 202 efferents, 203 storage parts, 204 calculation control unit (CPU), the translation circuit of the right IH heating source of 210R, the translation circuit of the left IH heating source of 210L, the heater drive circuit of 211 radiant type central authorities electrical-heating sources 7, 212 heater drive circuits of heating with radiant type electrical-heating source driving grid heating chambers 9, 213 drive the heating heater drive circuit of radiant type electrical-heating source 23 in the storehouse of grid heating chamber 9, the driving heater drive circuit of 214 catalyst heater 121H, the liquid crystal panel drive circuit of 215 synthetic display parts 100, 221 rectifier circuits, 222 coils, 223 smoothing capacitors, 224 resonating capacitors, 225 switch blocks (IGBT), 226 free-wheel diodes, 227 current detection sensors, 228 drive circuits, 228A drive circuit, 228B drive circuit, 231 drive circuits, 240 temperature sensing circuits, 241 detector units (temperature sensor), 242 detector units (storehouse temperature transducer), 243 detector units (temperature sensor), 244 detector units (temperature sensor), 245 detector units (temperature sensor), 250 bread dedicated key, 251 compound cooking keys, 260 ~ 264 drive circuits, 267A current sensor, 267B current sensor, 267C current sensor, 267D current sensor, 270 ~ 275 spaces, 276 separate radiation portions, 277 illuminating parts on a large scale, 278 drive circuits, 280 heating object mounting judging parts, 290 coil supports bodies, 290A supporting jut, 290Y coil supports body, 291 anti-magnet rings, 300 CD-ROM drive motor, 307 spaces, 310 through holes, 311 main heater coil figures, 312 secondary heater coil figures, display part on the left of 313L, 313M central authorities display part, display part on the right side of 313R, 314 display windows, 315 speech synthesizing devices, 316 loud speakers, 317 ~ 320 enter keies, the enter key of 330 ~ 336 thermal powers, 337 thermal power displays, 338 high temperature displays, 339 thermal power show tags, 340 thermal power show tags, 350 convection current promote to control selection portion (selector switch), 351 cooking menu displays, 352 gaps, 353 air supply ducts, the inner space of 354 air supply ducts, 355 open-works, 356 light-conductive holes, 357 holding plates.

Claims (30)

1. an induction heating cooking instrument, is characterized in that, this induction heating cooking instrument has:
Top board, the heating object that mounting is put into for cooked;
Circular main heater coil, is configured in the below of above-mentioned top board;
1st secondary heater coil of flat pattern and the 2nd secondary heater coil, integrally bending becomes the roughly entirety of the both sides outer peripheral edges along above-mentioned main heater coil respectively, closely configure in the both sides of above-mentioned main heater coil, there is the transverse width dimension less than the radius of main heater coil;
Translation circuit, respectively to above-mentioned main heater coil and the 1st secondary heater coil, the 2nd secondary heater coil supply induction heating electric power;
Control part, controls the output of above-mentioned translation circuit; And
Operating portion, to beginning, the thermal power setting of above-mentioned control part instruction heating,
During above-mentioned control part arranges and does not supply induction heating electric power to above-mentioned 1st secondary heater coil, in this period, from above-mentioned translation circuit to above-mentioned 2nd secondary heater coil supply induction heating electric power, afterwards, arrange during stopping supplying induction heating electric power to above-mentioned 2nd secondary heater coil, in this period, from above-mentioned translation circuit to above-mentioned 1st secondary heater coil supply induction heating electric power
Above-mentioned control part is repeatedly relative to the above-mentioned energising switching action of the 1st secondary heater coil, the 2nd secondary heater coil.
2. an induction heating cooking instrument, is characterized in that, this induction heating cooking instrument has:
Top board, the heating object that mounting is put into for cooked;
Circular main heater coil, is configured in the below of above-mentioned top board;
The secondary heater coil of more than 4 of flat pattern, closely configures in the both sides of above-mentioned main heater coil, has the transverse width dimension less than the radius of main heater coil;
Translation circuit, respectively to above-mentioned main heater coil and all secondary heater coil supply induction heating electric power;
Control part, controls the output of above-mentioned translation circuit; And
Operating portion, to beginning, the thermal power setting of above-mentioned control part instruction heating,
Above-mentioned secondary heater coil is divided for by more than half and the 1st group that forms less than total adjacent secondary heater coil and the 2nd group that is made up of remaining secondary heater coil,
During above-mentioned control part arranges and does not supply induction heating electric power to above-mentioned 1st group of secondary heater coil, in this period, from above-mentioned translation circuit to above-mentioned 2nd group of secondary heater coil supply induction heating electric power, afterwards, arrange during stopping supplying induction heating electric power to above-mentioned 2nd group of secondary heater coil, in this period, from above-mentioned translation circuit to above-mentioned 1st group of secondary heater coil supply induction heating electric power
Above-mentioned control part is repeatedly relative to the above-mentioned energising switching action of the 1st group of pair heater coil, the 2nd group of secondary heater coil.
3. an induction heating cooking instrument, is characterized in that, this induction heating cooking instrument has:
Top board, the heating object that mounting is put into for cooked;
Circular main heater coil, is configured in the below of above-mentioned top board;
1st secondary heater coil of flat pattern and the 2nd secondary heater coil, integrally bending becomes the roughly entirety of the both sides outer peripheral edges along above-mentioned main heater coil respectively, closely configure respectively in the both sides of above-mentioned main heater coil, there is the transverse width dimension less than the radius of main heater coil;
Translation circuit, respectively to above-mentioned main heater coil and the 1st secondary heater coil, the 2nd secondary heater coil supply induction heating electric power;
Control part, controls the output of above-mentioned translation circuit; And
Operating portion, to beginning, the thermal power setting of above-mentioned control part instruction heating,
Above-mentioned control part is from above-mentioned translation circuit to above-mentioned 2nd secondary heater coil supply ratio to the electric power that the induction heating electric power of above-mentioned 1st secondary heater coil supply is large, afterwards, reduce the induction heating electric power to above-mentioned 2nd secondary heater coil supply, the electric power larger than this electric power is supplied from above-mentioned translation circuit above-mentioned 1st secondary heater coil
Above-mentioned control part is repeatedly relative to the above-mentioned energising switching action of the 1st secondary heater coil, the 2nd secondary heater coil.
4. an induction heating cooking instrument, is characterized in that, this induction heating cooking instrument has:
Top board, the heating object that mounting is put into for cooked;
Circular main heater coil, is configured in the below of above-mentioned top board;
The secondary heater coil of more than 4 of flat pattern, closely configures in the both sides of above-mentioned main heater coil, has the transverse width dimension less than the radius of main heater coil;
Translation circuit, respectively to above-mentioned main heater coil and all secondary heater coil supply induction heating electric power;
Control part, controls the output of above-mentioned translation circuit; And
Operating portion, to beginning, the thermal power setting of above-mentioned control part instruction heating,
Above-mentioned secondary heater coil is divided for by more than half and the 1st group that forms less than total adjacent secondary heater coil and the 2nd group that is made up of remaining secondary heater coil,
Above-mentioned control part is from above-mentioned translation circuit to above-mentioned 2nd group of secondary heater coil supply ratio to the electric power summation that the induction heating electric power summation of above-mentioned 1st group of secondary heater coil supply is large, afterwards, reduce the induction heating electric power summation to above-mentioned 2nd group of secondary heater coil supply, the electric power summation larger than this electric power summation is supplied from above-mentioned translation circuit above-mentioned 1st group of secondary heater coil
Above-mentioned control part is repeatedly relative to the above-mentioned energising switching action of the 1st group of pair heater coil, the 2nd group of secondary heater coil.
5. an induction heating cooking instrument, is characterized in that, this induction heating cooking instrument has:
Heating object, puts into for cooked;
Top board, loads above-mentioned heating object;
Circular main heater coil, is configured in the below of above-mentioned top board;
1st secondary heater coil of flat pattern and the 2nd secondary heater coil, integrally bending becomes the roughly entirety of the both sides outer peripheral edges along above-mentioned main heater coil respectively, closely configure respectively in the both sides of above-mentioned main heater coil, there is the transverse width less than the radius of main heater coil;
Translation circuit, respectively to above-mentioned main heater coil and the 1st secondary heater coil, the 2nd secondary heater coil supply induction heating electric power;
Control part, controls the output of above-mentioned translation circuit; And
Operating portion, to beginning, the thermal power setting of above-mentioned control part instruction heating,
Above-mentioned control part is relative to above-mentioned 1st secondary heater coil, from above-mentioned translation circuit with the 2nd thermal power supply induction heating electric power, meanwhile, relative to the 2nd secondary heater coil, from above-mentioned translation circuit with the 1st thermal power supply induction heating electric power less than the 2nd thermal power
Add in the cooking and hanker, alternately change between the 1st secondary heater coil and the 2nd secondary heater coil with the secondary heater coil of above-mentioned 2nd thermal power heat driven.
6. an induction heating cooking instrument, is characterized in that, this induction heating cooking instrument has:
Heating object, puts into for cooked;
Top board, loads above-mentioned heating object;
Circular main heater coil, is configured in the below of above-mentioned top board;
The secondary heater coil of more than 4 of flat pattern, closely configures in the both sides of above-mentioned main heater coil, has the transverse width less than the radius of main heater coil;
Translation circuit, respectively to above-mentioned main heater coil and all secondary heater coil supply induction heating electric power;
Control part, controls the output of above-mentioned translation circuit; And
Operating portion, to beginning, the thermal power setting of above-mentioned control part instruction heating,
Above-mentioned secondary heater coil is divided for by more than half and the 1st group that forms less than total adjacent secondary heater coil and the 2nd group that is made up of remaining secondary heater coil,
Above-mentioned control part is relative to above-mentioned 1st group of secondary heater coil, from above-mentioned translation circuit with the 2nd thermal power summation supply induction heating electric power, meanwhile, the secondary heater coil relative to the 2nd group, from above-mentioned translation circuit with the 1st thermal power summation supply induction heating electric power less than the 2nd thermal power summation
Add in the cooking and hanker, change with the 1st group of above-mentioned 2nd thermal power summation heat driven secondary heater coil.
7. an induction heating cooking instrument, is characterized in that, this induction heating cooking instrument has:
Heating object, puts into for cooked;
Top board, loads above-mentioned heating object;
Circular main heater coil, is configured in the below of above-mentioned top board;
1st secondary heater coil of flat pattern and the 2nd secondary heater coil, integrally bending becomes the roughly entirety of the both sides outer peripheral edges along above-mentioned main heater coil respectively, closely configure respectively in the both sides of above-mentioned main heater coil, there is the transverse width less than the radius of main heater coil;
Translation circuit, respectively to above-mentioned main heater coil and above-mentioned 1st secondary heater coil, the 2nd secondary heater coil supply induction heating electric power;
Control part, controls the output of above-mentioned translation circuit; And
Operating portion, to beginning, the thermal power setting of above-mentioned control part instruction heating,
Above-mentioned control part is during supplying induction heating electric power with the 1st thermal power to above-mentioned main heater coil, from above-mentioned translation circuit to above-mentioned 1st secondary heater coil with the 2nd thermal power supply induction heating electric power larger than above-mentioned 1st thermal power, the induction heating electric power to above-mentioned 1st secondary heater coil is stopped to supply afterwards, and from above-mentioned translation circuit to above-mentioned 2nd secondary heater coil with the 3rd thermal power supply induction heating electric power larger than above-mentioned 1st thermal power
Above-mentioned control part is repeatedly relative to the above-mentioned energising switching action of the 1st secondary heater coil, the 2nd secondary heater coil.
8. an induction heating cooking instrument, is characterized in that, this induction heating cooking instrument has:
Heating object, puts into for cooked;
Top board, loads above-mentioned heating object;
Circular main heater coil, is configured in the below of above-mentioned top board;
The secondary heater coil of more than 4 of flat pattern, closely configures in the both sides of above-mentioned main heater coil, has the transverse width less than the radius of main heater coil;
Translation circuit, respectively to above-mentioned main heater coil and all secondary heater coil supply induction heating electric power;
Control part, controls the output of above-mentioned translation circuit; And
Operating portion, to beginning, the thermal power setting of above-mentioned control part instruction heating,
Above-mentioned secondary heater coil is divided for by more than half and the 1st group that forms less than total adjacent secondary heater coil and the 2nd group that is made up of remaining secondary heater coil,
Above-mentioned control part is during supplying induction heating electric power with the 1st thermal power to above-mentioned main heater coil, relative to above-mentioned 1st group of secondary heater coil, from above-mentioned translation circuit with the 2nd thermal power summation supply induction heating electric power larger than above-mentioned 1st thermal power, the induction heating electric power to above-mentioned 1st secondary heater coil is stopped to supply afterwards, and relative to above-mentioned 2nd group of secondary heater coil, from above-mentioned translation circuit with the 3rd thermal power summation supply induction heating electric power larger than above-mentioned 1st thermal power
Above-mentioned control part is repeatedly relative to the above-mentioned energising switching action of the 1st group of pair heater coil, the 2nd group of secondary heater coil.
9. an induction heating cooking instrument, is characterized in that, this induction heating cooking instrument has:
Heating object, puts into for cooked;
Top board, loads above-mentioned heating object;
Circular main heater coil, is configured in the below of above-mentioned top board;
1st secondary heater coil of flat pattern and the 2nd secondary heater coil, closely configure respectively in the both sides of above-mentioned main heater coil, has the transverse width less than the radius of main heater coil;
Translation circuit, respectively to above-mentioned main heater coil and above-mentioned 1st secondary heater coil, the 2nd secondary heater coil supply induction heating electric power;
Control part, controls the output of above-mentioned translation circuit; And
Operating portion, to beginning, the thermal power setting of above-mentioned control part instruction heating,
Above-mentioned control part drives above-mentioned main heater coil off and on the 1st thermal power, and during the driving stopping this main heater coil, from above-mentioned translation circuit to above-mentioned 1st secondary heater coil with the 2nd thermal power supply induction heating electric power that the 1st thermal power during heat driven than main heater coil is large, the induction heating electric power to above-mentioned 1st secondary heater coil is stopped to supply afterwards, and from above-mentioned translation circuit to above-mentioned 2nd secondary heater coil with the 3rd thermal power supply induction heating electric power larger than above-mentioned 1st thermal power
Above-mentioned control part, after having carried out the above-mentioned energising switching action relative to the 1st secondary heater coil, the 2nd secondary heater coil, drives above-mentioned main heater coil with the 1st thermal power, when this driving, stops the driving of the 1st secondary heater coil, the 2nd secondary heater coil.
10. an induction heating cooking instrument, is characterized in that, this induction heating cooking instrument has:
Heating object, puts into for cooked;
Top board, loads above-mentioned heating object;
Circular main heater coil, is configured in the below of above-mentioned top board;
The secondary heater coil of more than 4 of flat pattern, closely configures in the both sides of above-mentioned main heater coil, has the transverse width less than the radius of main heater coil;
Translation circuit, respectively to above-mentioned main heater coil and all secondary heater coil supply induction heating electric power;
Control part, controls the output of above-mentioned translation circuit; And
Operating portion, to beginning, the thermal power setting of above-mentioned control part instruction heating,
Above-mentioned secondary heater coil is divided for by more than half and the 1st group that forms less than total adjacent secondary heater coil and the 2nd group that is made up of remaining secondary heater coil,
Above-mentioned control part drives above-mentioned main heater coil off and on the 1st thermal power, and during the driving stopping this main heater coil, relative to above-mentioned 1st group of secondary heater coil, from above-mentioned translation circuit with the 2nd thermal power summation supply induction heating electric power larger than the 1st thermal power of main heater coil, stop the induction heating electric power supply to above-mentioned 1st group of secondary heater coil afterwards, and relative to above-mentioned 2nd group of secondary heater coil, from above-mentioned translation circuit with the 3rd thermal power summation supply induction heating electric power larger than above-mentioned 1st thermal power
Above-mentioned control part is after the above-mentioned energising switching action of having carried out relative to the 1st group secondary heater coil, the 2nd group of secondary heater coil, above-mentioned main heater coil is driven with the 1st thermal power, when this driving, stop the driving of the 1st group of secondary heater coil, the 2nd group of secondary heater coil.
11. 1 kinds of induction heating cooking instruments, is characterized in that, this induction heating cooking instrument has:
Top board, the heating object that mounting is put into for cooked;
Circular main heater coil, is configured in the below of above-mentioned top board;
1st secondary heater coil of flat pattern and the 2nd secondary heater coil, integrally bending becomes the roughly entirety of the both sides outer peripheral edges along above-mentioned main heater coil respectively, closely configure in the both sides of above-mentioned main heater coil, there is the transverse width less than the radius of main heater coil;
Translation circuit, respectively to above-mentioned main heater coil and above-mentioned 1st secondary heater coil and above-mentioned 2nd secondary heater coil supply induction heating electric power;
Control part, controls the output of above-mentioned translation circuit; And
Operating portion, to beginning, the thermal power setting of above-mentioned control part instruction heating,
2nd selection portion of the cooking menu of the 1st selection portion in aforesaid operations portion with the cooking menu paying attention to firing rate and the uniformity paying attention to heating,
Above-mentioned control part switches, when above-mentioned 1st selection portion is selected, make main heater coil identical with the direction of the high-frequency current in the adjacent area of the 1st secondary heater coil, the 2nd secondary heater coil, when the 2nd selection portion is selected, make the direction of this high-frequency current contrary.
12. 1 kinds of induction heating cooking instruments, is characterized in that, this induction heating cooking instrument has:
Top board, the heating object that mounting is put into for cooked;
Circular main heater coil, is configured in the below of above-mentioned top board;
1st secondary heater coil of flat pattern and the 2nd secondary heater coil, integrally bending becomes the roughly entirety of the both sides outer peripheral edges along above-mentioned main heater coil respectively, closely configure in the both sides of above-mentioned main heater coil, there is the transverse width less than the radius of main heater coil;
Translation circuit, respectively to above-mentioned main heater coil and above-mentioned 1st secondary heater coil and above-mentioned 2nd secondary heater coil supply induction heating electric power;
Control part, controls the output of above-mentioned translation circuit;
Operating portion, to beginning, the thermal power setting of above-mentioned control part instruction heating; And
Display part, shows the heating condition indicated above-mentioned control part,
1st selection portion in aforesaid operations portion with the cooking menu making firing rate preferential, the 2nd selection portion making the preferential cooking menu of the uniformity of heating and make the 3rd selection portion of firing rate and the preferential cooking menu of heat insulation function,
Above-mentioned control part is when above-mentioned 1st selection portion is selected, with main heater coil and the 1st secondary heater coil, the direction of the coil current in the adjacent area of the 2nd secondary heater coil becomes identical mode heat driven, when the 2nd selection portion is selected, switch, become contrary to make the direction of this coil current, when the 3rd selection portion is selected, with main heater coil and the 1st secondary heater coil, the direction of the high-frequency current in the adjacent area of the 2nd secondary heater coil becomes identical mode heat driven, the direction of this high-frequency current is made to carry out heat driven on the contrary afterwards.
13. 1 kinds of induction heating cooking instruments, is characterized in that, this induction heating cooking instrument has:
Top board, the heating object that mounting is put into for cooked;
Circular main heater coil, is configured in the below of above-mentioned top board;
1st secondary heater coil of flat pattern and the 2nd secondary heater coil, integrally bending becomes the roughly entirety of the both sides outer peripheral edges along above-mentioned main heater coil respectively, closely configure in the both sides of above-mentioned main heater coil, there is the transverse width less than the radius of main heater coil;
Translation circuit, respectively to above-mentioned main heater coil and above-mentioned 1st secondary heater coil and above-mentioned 2nd secondary heater coil supply induction heating electric power;
Control part, controls the output of above-mentioned translation circuit;
Operating portion, to beginning, the thermal power setting of above-mentioned control part instruction heating;
Display part, shows the heating condition indicated above-mentioned control part; And
Convection current promotes to control selection portion, can select the control mode of the convection current promoting cooked for user,
Above-mentioned control part is when above-mentioned selection portion is selected operation, control the direction of the high-frequency current in the adjacent area of main heater coil and the 1st secondary heater coil, the 2nd secondary heater coil, and make alternatively to carry out heat driven relative to the operation condition of above-mentioned multiple secondary heater coil.
14. induction heating cooking instruments according to any one of claim 1 ~ 13, is characterized in that,
This induction heating cooking instrument also has the temperature sensor of the temperature detecting heating object,
When said temperature transducer detects the fluidized state of cooked, control part is repeatedly relative to the energising switching action of secondary heater coil.
15. induction heating cooking instruments according to claim 13, is characterized in that,
This induction heating cooking instrument also has the temperature sensor of the temperature detecting heating object,
Control part, when said temperature transducer detects that the temperature of cooked or heating object is more than the temperature of regulation, makes above-mentioned convection current promote to control the selection operation of selection portion effectively.
16. induction heating cooking instruments according to claim 13, is characterized in that,
This induction heating cooking instrument also has display user to the display part of the heating condition that control part indicates,
At this display part, convection current promote to control the selection key of selection portion is shown as can the state of touch operation.
17. induction heating cooking instruments according to claim 11, is characterized in that,
This induction heating cooking instrument also has display user to the display part of the heating condition that control part indicates,
At this display part, the selection key of the 1st selection portion, the 2nd selection portion is shown as can the state of touch operation.
18. induction heating cooking instruments according to claim 12, is characterized in that,
This induction heating cooking instrument also has display user to the display part of the heating condition that control part indicates,
At this display part, the selection key of the 1st selection portion, the 2nd selection portion, the 3rd selection portion is shown as can the state of touch operation.
19. induction heating cooking instruments according to any one of claim 1 ~ 13, is characterized in that,
This induction heating cooking instrument also has display user to the display part of the heating condition that control part indicates,
At this display part display control unit repeatedly relative to the energising switching action of secondary heater coil.
20. induction heating cooking instruments according to any one of claim 1 ~ 13, is characterized in that,
This induction heating cooking instrument also comprises the heating object mounting judging part judging whether to load heating object above main heater coil and secondary heater coil,
When above-mentioned heating object mounting judging part is judged as loading heating object above above-mentioned main heater coil and secondary heater coil simultaneously, control part enables collaborative heating action perform.
21. induction heating cooking instruments according to any one of claim 1 ~ 13, is characterized in that,
This induction heating cooking instrument also comprises:
Display part, the heating condition that display user indicates control part; And
Heating object mounting judging part, judges whether load heating object above main heater coil and secondary heater coil,
When above-mentioned heating object mounting judging part is judged as loading heating object above above-mentioned main heater coil and secondary heater coil simultaneously, control part enables collaborative heating action perform, and utilizes main heater coil and secondary heater coil to carry out collaborative heating action in above-mentioned display part display.
22. induction heating cooking instruments according to any one of claim 2,4,6,8,10, is characterized in that,
The secondary heater coil of more than 4 is configured in position symmetrical centered by main heater coil, and is separated with the insulation of regulation with arranging spatially with the periphery of main heater coil,
The side edge part adjacent with main heater coil outer peripheral edges of these each secondary heater coils is the curved shapes along main heater coil outer peripheral edges shape.
23. induction heating cooking instruments according to any one of claim 2,4,6,8,10, is characterized in that,
Form the secondary heater coil of the 1st group and the 2nd group, at each time interval, be one by one changed to adjacent secondary coil successively.
24. induction heating cooking instruments according to claim 23, is characterized in that,
Secondary heater coil is formed by 4, by every 2 secondary heater coils of formation the 1st group and the 2nd group at each time interval, one by one change to the adjacent secondary coil in identical direction successively, after end 4 intervals, in the 5th interval, revert to the combination of the secondary heater coil identical with initial interval.
25. induction heating cooking instruments according to claim 20, is characterized in that,
The matching rate of the secondary curved shape of heater coil and the curved shape of main heater coil outer peripheral edges is more than 60%.
26. induction heating cooking instruments according to claim 18 or 19, is characterized in that,
Secondary heater coil is across main heater coil, two is one group toward each other, a subcommutation circuit is connected to this group secondary heater coil, this translation circuit is switched by above-mentioned control part, to make certain the secondary heater coil in two secondary heater coils and main heater coil be driven via storage capacitors simultaneously, thus carry out collaborative heating.
27. induction heating cooking instruments according to claim 5, is characterized in that,
2nd thermal power is more than 1.5 times of the 1st thermal power.
28. induction heating cooking instruments according to claim 6, is characterized in that,
2nd thermal power summation is more than 1.5 times of the 1st thermal power summation.
29. induction heating cooking instruments according to claim 7, is characterized in that,
2nd thermal power is identical with the 3rd thermal power.
30. induction heating cooking instruments according to claim 8, is characterized in that,
2nd thermal power summation is identical with the 3rd thermal power summation.
CN201180052424.7A 2010-09-03 2011-08-31 Induction heating cooking instrument Expired - Fee Related CN103202098B (en)

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JP2010197693 2010-09-03
PCT/JP2011/004866 WO2012029306A1 (en) 2010-09-03 2011-08-31 Induction cooking appliance

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